Top Circuits Page 212
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A versatile circuit of IF signal generator which may be of interest to radio hobbyists and professionals alike. Transistors T1 and T2 form an astable multivibrator oscillating in the audio frequency range of 1 to 2 kHz. RF oscillator is built around....
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Connect the components. Take note of the connections for the transistor. Connect the 22 ohm load resistor and thermistor in a way that they make good thermal contact. Note: If you are using the Light Application Adaptor, REFIN- is already connected to AGND.....
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In this application note, we create a heart rate monitor by using one IR LED and phototransistor pair and observing the waveform at the phototransistor output. This is intended for illustrating a typical light sensor application and not intended for actual....
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In this Tutorial we are using atmega8 with 4 MHZ Crystal and unipolar stepper motors, ULN2003 is Darlington pair driver I.C s used ..
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In normal we used to control the industrial equipments by manual operation. Hence it is to be updated step by step manually. It is overcome by a new mode of communication which is used to control all those equipments through a single message from anywhere.....
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In this interface session we are interface mcp3202 adc interface with 8051 microcontroller. Mcp3202 is a 12bit spi protocol adc, is interface with P89v51rd2 microcontroller,this microcontroller have spi protocol so no need to worry about SDI,SDO,CLCK.....
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We are using 6v/2amps 1. 8degree stepper motor. In this circuit CD4050 hex buffer using to connect to the microcontroller. The output of cd4050 is connected to the TIP122 of the BASE. The Emitter and collecter is conneted to 1N4007 diode the colleter of....
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The following is an account of such an undertaking. Recently I was involved in a design review for a cost reduction project, where an older design was getting an update. The new design was a merging of two different designs, including someupdated parts and....
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The A/D converter employs dual-slope integrator providing 10Hz sampling rate, while Digital output sent to MCU will be multiplexing four bit BCD started from MSD, LSD and NSD respectively...
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Learn how to interface LCD 16x2 with 8051. Download free source code on LCD interfacing with 8051 Microcontroller ..
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Learn how to interface LEDs with 8051 Microcontroller. Download free source code and circuit diagram of P89V51RD2 Microcontroller ..
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This is a circuit to record the altitude of a R/C-plane. The data is saved on a SD-Card. It uses an ATmega8 microcontroller and a SCP1000 chip to measure temperature and (more important) atmospheric pressure. If you decide to build and use this circuit, you....
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My modification, i have two trigger coils , two power coils, one reed switch. The wheel is 4 north pole magnet, it generates 9 radiant pulses per....
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First, I would like to say hello to all of you, I am new to this site, so take it ""easy"" on me I was referred here to expose about my....
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I`m trying to get an ignition coil to create sparks running it with a Mosfet powered by a 555 timer. The Mosfet is definitely switching. I checked it....
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Understanding of the concept of "Hysteresis" is very important. When generally considered, this phenomena gives rise to losses seen in the dielectric of a capacitor or lamination of a transformer, these can be seen in the form of heat(emission of infrared....
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The "cold electricity" is actually RF frequency AC. When you have sinusoidal AC the voltage is half the time positive and half the time negative. On a scope you can see this, but on a voltmete..
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Ian I got some hedges from the local motor repair place and also they gave me a large flat sheet of the stuff before I left. After having to re-bend a ....
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Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us Hi folks, just wondering if anyone has tried these circuits. The....
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here is a pic running 36v 500ma on the front, 36v charging on the back. Brightness is approaching level of a 240v globe, considering its a 20 watt....
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Originally Posted by Electrotek so is something missing or not? This is what I`m trying to find out. I think you are missing some of the external....
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Nice work Spokane & Ghst, i will be in the near future joining you in this replication as this thread is quickly becoming a classic. keep up the....
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Has any one tried colliding two High Voltage potentials in a Grey Tube? Wiring two (identical)....
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Geotron, I`ve fried a few mots myself. What kind of bridge do you have leaving it? When I had just a 1kv bridge made from four 6a100`s, I had problems ....
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Using an odd mix of high voltage diodes although I have some 1200 volt, 6 amp diodes on order which will replace the three HV diodes I`m currently using. The Relay is triggered with a basic transistor circuit and square wave generator. The circu..
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Originally Posted by kalena555 Dear Mark, The bit of info of getting the motor to run without the tubes is new info to me. So much learn XD. Well now....
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Originally Posted by Spokane1 I have just about all of the parts needed for a first run. Mr. Dollard says he used Teflon coated coax, which is....
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I just uploaded one of the rpm tests I did a few months ago with the first PPMM protoype I had SRSM1: YouTube - scienculo`s Channel....
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Originally Posted by T-1000 In regards of cold electricity it is exactly what Duncan says. In our experiments we got burning wires from Tesla....
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Farmhand I have read those few pages and am trying to digest a little more of the book! Difficult to comprehend at times that Tesla could achieve at....
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Originally Posted by kajunkreations The natural resonant freq of the L2 is 31.5 mhz. I calculated the 40K by using LC meter and LC resonance....
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Hi Dragon thank`s very much for your great info. I have rewatched all your video (or at least Lenz or Znel video) And i made a shematic how i see the....
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I`d like to make a wideband RF detector. I`m thinking of using a range of resonant LC tanks, 5 to 10 mhz apart, (except / or 1 mhz apart from 9 to....
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Hi folks, Hi slayer. this graph from Joseph Newman`s book should explain some things, though the energy increase is probably from other additional....
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After some more time with the circuit, the variable pot certainly brings in more useful results than I expected. Had linked draw to pot position and LED brightness, but not to transistor on-time. It should be obvious and now is, after reading your p..
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Laser Design an efficient reciever/collector that could withstand a beam hitting it (maybe an enormous photomultiplier array ), and use a beam mode and wavelength that isn`t easily attenuated. And in that case you`d go for the explosive bursts of option 1.....
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ok LOL i will buy transformer to run in a 12V battery but this one is not similar to what the user romerouk from overunity is using?....
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Thanks for the diagram Zinc! Loooks very interesting - please keep us informed of any results. I`m MrFlathunter on Youtube and you commented on my 12V ....
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According to this Russian forum, the SR193 involves warming of the ferrite cores. See Electrical Parameters of Ferrites Source: Next Energy Forum,....
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Originally Posted by Harvey The inside of a sphere is always zero volts potential, so it will keep taking new charge indefinitely from the coil-pack ..
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Hi Folks, I`m new to the forum and a bit of an electronic newbee, (from an engineering technical perspective, though have tinkered with circuits/schema....
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Try this on for size. This is Tesla`s own words. From: ""On Light and Other High Frequency Phenomena"" ""ON PHENOMENA PRODUCED BY....
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The frequency is pretty stable as the volts drop. The reason i called it the backwards jt is cause it works best with a bifilar coil and one transistor. and with one tweak to your circuit you can run a battery down to 0. 1 volts. using a 2n3055 transistor....
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At around 50 Khz i can get over 40 volts at the receiver. Light`s LED`s no probs. It even blew a 5mm LED. The cap I had on the AC was blocking the energy. Anyway what I did was connect the primary negative to ground with the secondary on the transmitter, a....
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I am hoping to get some help on a timing circuit I need to build. I need to have a spark plug fire every 10 or 20 revolutions that a shaft....
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Hi everyone! I have been studying Nikola Tesla`s amazing work for approximately 11 months. A few days ago I came across Imhotep`s brilliant Radiant....
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Thank you very much I will try that. @StevanC What do you think, are we making some progress or should we stick to your design scratchrobot....
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You are right - this was what i was talking about in my description of EM fields in the WFC - the principle is the same, the only differance....
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Originally Posted by grizli TUBE is not fork and does not resonate that way its probably longitudinal sound wave along tube metal .. and holding....
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-
The Advanced Laser Diagnostics Laboratory (ALDL) specializes in the development and application of laser diagnostics for fluid dynamic measurements. Areas of specialization include high-repetition rate flow visualization (up to 1 million frames/sec) and....
-
-
-
-
Using measured threshold voltage and Ids-Vds curves, we can then check how well first-order MOSFET theory holds up in real devices and get a practical feel of the limitation of first-order theoretical MOSFET equation. The MOSFETs we will use in this....
-
-
-
Channel 0 of the Dual Voltage/Current Source (DVI) was used as the input. Input levels of +3V and +5V were used. Load current was the variable of interest we wanted to relate to the performance of the DVI. One DVI with a maximum of 300 mA and another with a....
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A complete guide to tackling those difficult electrical system tests in today`s cars. The ultimate resource for getting rid of that check engine light! Get info from a professional technician today!....
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I decided to make my own K9AY antenna system and controller. Basically, after looking at the currently available commercial version, I figured I could make a better unit for less money and be happy. The basis for the K9AY antenna is that it has a steerable....
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Amplitude Modulation (AKA AM) was the first modulation type to impress audio on an RF carrier. Prior to this, information was transmitted via on/off keying of a continuous wave transmitter using Morse code or some equivalent. 1. Low level modulation. The....
-
Back in the day when AM was king, no expense was spared on transmitting equipment. I remember the GE BTA-25 transmitter from the same era, it was build like a tank. Once, while we were repairing the Harris MW-50A main transmitter, the old GE burped,....
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An Icom PCR-1000 listening to various MF, HF and VHF radio stations. However, there is a slight problem. Very slight, almost too small to even mention, more of an inconvenience than a problem. Still, if I am being inconvenienced, than others are too. This....
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Door Phone , LM 386 is just right for a door phone application. It is very useful application in the present urban households. One condenser microphone and a speake....
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Improved 3 Transistor Audio Amp , The load resistor for the driver transistor is tied directly to the + supply. This has a disadvantage in that as the output moves positive, the drop across....
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LA4555 Audio Amplifier Stereo circuit and mono circuit are given in schematic .LA 4555 is basically a stereo amplifier with 2.3 watts into 4 ohms speakers at a total dis....
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LM 386 Audio Amplifier LM386 is one of the earliest audio ICs but is still going strong. It works with a few external components and is indispensable for general hobby circui....
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Preamplifier with LA3161 Preamplifiers are used to amplify low level signals such as those from mikes, tape heads before they are fed into power amplifiers. Power amplifiers ar....
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Chandelier Dimmer , Many of the chandeliers have a pull chord switch. Now add a novelty to your chandelier and surprise the guests. Place a small wire down the lamps from....
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Digital IC, Door Knob alarm Here is circuit if you want an alarm to be sounded when somebody touches some thing. If any body touches say, the door handle, buzzer inside rings. But....
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Digital IC, Electronic Lock Here is an electronic code lock, which can be used as a door latch or key for ignition, etc. Operation is fairly tricky and there lies the beauty of the ci....
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Light Sensitive Staircase Switch with Triac , Operation of the third circuit is much similar except that it has photo sensitivity. The circuit is shown in Schematic When there is no sufficient l....
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Stitching Machine Motor Speed Control, Motor operated stitching machines have a series of carbon buttons in an enclosure operated by foot pedal. As the pressure on the foot pedal is increase....
-
Basic Oscillator (Tone Generator) At 1.8 KHz, IC 555 , Here we have an astable oscillator built around 555, which gives an alarm tone of 1.8 KHz directly driving a speaker. This is basic alarm circuit, whic....
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IC 555, Light Alarm (Sun Up Alarm) , This circuit designed to sound a loud alarm at the break of the dawn especially for those wh cannot wake up even with an alarm clock. Circuit can be modifi....
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1.5 Volt Tracking Transmitter, Simple circuits , The current draw for this tracker is 3.7mA, so the 1.5V button cell will last awhile. What the heck am I suppose to hear you ask? When your circuit is....
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The Automatic Forklift System (AFS) is designed to make the process of stocking warehouses safer and more efficient. With current manually operated forklifts, employees are at risk of injury. The Automatic Forklift System (AFS) is designed to make the....
-
For my final project, I decided to make a line-follower robot. This micro controller line follower robot is designed to be able to follow a black line on the ground....
A versatile circuit of IF signal generator which may be of interest to radio hobbyists and professionals alike. Transistors T1 and T2 form an astable multivibrator oscillating in the audio frequency range of 1 to 2 kHz. RF oscillator is built around....
Connect the components. Take note of the connections for the transistor. Connect the 22 ohm load resistor and thermistor in a way that they make good thermal contact. Note: If you are using the Light Application Adaptor, REFIN- is already connected to AGND.....
In this application note, we create a heart rate monitor by using one IR LED and phototransistor pair and observing the waveform at the phototransistor output. This is intended for illustrating a typical light sensor application and not intended for actual....
In this Tutorial we are using atmega8 with 4 MHZ Crystal and unipolar stepper motors, ULN2003 is Darlington pair driver I.C s used ..
In normal we used to control the industrial equipments by manual operation. Hence it is to be updated step by step manually. It is overcome by a new mode of communication which is used to control all those equipments through a single message from anywhere.....
In this interface session we are interface mcp3202 adc interface with 8051 microcontroller. Mcp3202 is a 12bit spi protocol adc, is interface with P89v51rd2 microcontroller,this microcontroller have spi protocol so no need to worry about SDI,SDO,CLCK.....
We are using 6v/2amps 1. 8degree stepper motor. In this circuit CD4050 hex buffer using to connect to the microcontroller. The output of cd4050 is connected to the TIP122 of the BASE. The Emitter and collecter is conneted to 1N4007 diode the colleter of....
The following is an account of such an undertaking. Recently I was involved in a design review for a cost reduction project, where an older design was getting an update. The new design was a merging of two different designs, including someupdated parts and....
The A/D converter employs dual-slope integrator providing 10Hz sampling rate, while Digital output sent to MCU will be multiplexing four bit BCD started from MSD, LSD and NSD respectively...
Learn how to interface LCD 16x2 with 8051. Download free source code on LCD interfacing with 8051 Microcontroller ..
Learn how to interface LEDs with 8051 Microcontroller. Download free source code and circuit diagram of P89V51RD2 Microcontroller ..
This is a circuit to record the altitude of a R/C-plane. The data is saved on a SD-Card. It uses an ATmega8 microcontroller and a SCP1000 chip to measure temperature and (more important) atmospheric pressure. If you decide to build and use this circuit, you....
My modification, i have two trigger coils , two power coils, one reed switch. The wheel is 4 north pole magnet, it generates 9 radiant pulses per....
First, I would like to say hello to all of you, I am new to this site, so take it ""easy"" on me I was referred here to expose about my....
I`m trying to get an ignition coil to create sparks running it with a Mosfet powered by a 555 timer. The Mosfet is definitely switching. I checked it....
Understanding of the concept of "Hysteresis" is very important. When generally considered, this phenomena gives rise to losses seen in the dielectric of a capacitor or lamination of a transformer, these can be seen in the form of heat(emission of infrared....
The "cold electricity" is actually RF frequency AC. When you have sinusoidal AC the voltage is half the time positive and half the time negative. On a scope you can see this, but on a voltmete..
Ian I got some hedges from the local motor repair place and also they gave me a large flat sheet of the stuff before I left. After having to re-bend a ....
Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us Hi folks, just wondering if anyone has tried these circuits. The....
here is a pic running 36v 500ma on the front, 36v charging on the back. Brightness is approaching level of a 240v globe, considering its a 20 watt....
Originally Posted by Electrotek so is something missing or not? This is what I`m trying to find out. I think you are missing some of the external....
Nice work Spokane & Ghst, i will be in the near future joining you in this replication as this thread is quickly becoming a classic. keep up the....
Has any one tried colliding two High Voltage potentials in a Grey Tube? Wiring two (identical)....
Geotron, I`ve fried a few mots myself. What kind of bridge do you have leaving it? When I had just a 1kv bridge made from four 6a100`s, I had problems ....
Using an odd mix of high voltage diodes although I have some 1200 volt, 6 amp diodes on order which will replace the three HV diodes I`m currently using. The Relay is triggered with a basic transistor circuit and square wave generator. The circu..
Originally Posted by kalena555 Dear Mark, The bit of info of getting the motor to run without the tubes is new info to me. So much learn XD. Well now....
Originally Posted by Spokane1 I have just about all of the parts needed for a first run. Mr. Dollard says he used Teflon coated coax, which is....
I just uploaded one of the rpm tests I did a few months ago with the first PPMM protoype I had SRSM1: YouTube - scienculo`s Channel....
Originally Posted by T-1000 In regards of cold electricity it is exactly what Duncan says. In our experiments we got burning wires from Tesla....
Farmhand I have read those few pages and am trying to digest a little more of the book! Difficult to comprehend at times that Tesla could achieve at....
Originally Posted by kajunkreations The natural resonant freq of the L2 is 31.5 mhz. I calculated the 40K by using LC meter and LC resonance....
Hi Dragon thank`s very much for your great info. I have rewatched all your video (or at least Lenz or Znel video) And i made a shematic how i see the....
I`d like to make a wideband RF detector. I`m thinking of using a range of resonant LC tanks, 5 to 10 mhz apart, (except / or 1 mhz apart from 9 to....
Hi folks, Hi slayer. this graph from Joseph Newman`s book should explain some things, though the energy increase is probably from other additional....
After some more time with the circuit, the variable pot certainly brings in more useful results than I expected. Had linked draw to pot position and LED brightness, but not to transistor on-time. It should be obvious and now is, after reading your p..
Laser Design an efficient reciever/collector that could withstand a beam hitting it (maybe an enormous photomultiplier array ), and use a beam mode and wavelength that isn`t easily attenuated. And in that case you`d go for the explosive bursts of option 1.....
ok LOL i will buy transformer to run in a 12V battery but this one is not similar to what the user romerouk from overunity is using?....
Thanks for the diagram Zinc! Loooks very interesting - please keep us informed of any results. I`m MrFlathunter on Youtube and you commented on my 12V ....
According to this Russian forum, the SR193 involves warming of the ferrite cores. See Electrical Parameters of Ferrites Source: Next Energy Forum,....
Originally Posted by Harvey The inside of a sphere is always zero volts potential, so it will keep taking new charge indefinitely from the coil-pack ..
Hi Folks, I`m new to the forum and a bit of an electronic newbee, (from an engineering technical perspective, though have tinkered with circuits/schema....
Try this on for size. This is Tesla`s own words. From: ""On Light and Other High Frequency Phenomena"" ""ON PHENOMENA PRODUCED BY....
The frequency is pretty stable as the volts drop. The reason i called it the backwards jt is cause it works best with a bifilar coil and one transistor. and with one tweak to your circuit you can run a battery down to 0. 1 volts. using a 2n3055 transistor....
At around 50 Khz i can get over 40 volts at the receiver. Light`s LED`s no probs. It even blew a 5mm LED. The cap I had on the AC was blocking the energy. Anyway what I did was connect the primary negative to ground with the secondary on the transmitter, a....
I am hoping to get some help on a timing circuit I need to build. I need to have a spark plug fire every 10 or 20 revolutions that a shaft....
Hi everyone! I have been studying Nikola Tesla`s amazing work for approximately 11 months. A few days ago I came across Imhotep`s brilliant Radiant....
Thank you very much I will try that. @StevanC What do you think, are we making some progress or should we stick to your design scratchrobot....
You are right - this was what i was talking about in my description of EM fields in the WFC - the principle is the same, the only differance....
Originally Posted by grizli TUBE is not fork and does not resonate that way its probably longitudinal sound wave along tube metal .. and holding....
The Advanced Laser Diagnostics Laboratory (ALDL) specializes in the development and application of laser diagnostics for fluid dynamic measurements. Areas of specialization include high-repetition rate flow visualization (up to 1 million frames/sec) and....
Using measured threshold voltage and Ids-Vds curves, we can then check how well first-order MOSFET theory holds up in real devices and get a practical feel of the limitation of first-order theoretical MOSFET equation. The MOSFETs we will use in this....
Channel 0 of the Dual Voltage/Current Source (DVI) was used as the input. Input levels of +3V and +5V were used. Load current was the variable of interest we wanted to relate to the performance of the DVI. One DVI with a maximum of 300 mA and another with a....
A complete guide to tackling those difficult electrical system tests in today`s cars. The ultimate resource for getting rid of that check engine light! Get info from a professional technician today!....
I decided to make my own K9AY antenna system and controller. Basically, after looking at the currently available commercial version, I figured I could make a better unit for less money and be happy. The basis for the K9AY antenna is that it has a steerable....
Amplitude Modulation (AKA AM) was the first modulation type to impress audio on an RF carrier. Prior to this, information was transmitted via on/off keying of a continuous wave transmitter using Morse code or some equivalent. 1. Low level modulation. The....
Back in the day when AM was king, no expense was spared on transmitting equipment. I remember the GE BTA-25 transmitter from the same era, it was build like a tank. Once, while we were repairing the Harris MW-50A main transmitter, the old GE burped,....
An Icom PCR-1000 listening to various MF, HF and VHF radio stations. However, there is a slight problem. Very slight, almost too small to even mention, more of an inconvenience than a problem. Still, if I am being inconvenienced, than others are too. This....
Door Phone , LM 386 is just right for a door phone application. It is very useful application in the present urban households. One condenser microphone and a speake....
Improved 3 Transistor Audio Amp , The load resistor for the driver transistor is tied directly to the + supply. This has a disadvantage in that as the output moves positive, the drop across....
LA4555 Audio Amplifier Stereo circuit and mono circuit are given in schematic .LA 4555 is basically a stereo amplifier with 2.3 watts into 4 ohms speakers at a total dis....
LM 386 Audio Amplifier LM386 is one of the earliest audio ICs but is still going strong. It works with a few external components and is indispensable for general hobby circui....
Preamplifier with LA3161 Preamplifiers are used to amplify low level signals such as those from mikes, tape heads before they are fed into power amplifiers. Power amplifiers ar....
Chandelier Dimmer , Many of the chandeliers have a pull chord switch. Now add a novelty to your chandelier and surprise the guests. Place a small wire down the lamps from....
Digital IC, Door Knob alarm Here is circuit if you want an alarm to be sounded when somebody touches some thing. If any body touches say, the door handle, buzzer inside rings. But....
Digital IC, Electronic Lock Here is an electronic code lock, which can be used as a door latch or key for ignition, etc. Operation is fairly tricky and there lies the beauty of the ci....
Light Sensitive Staircase Switch with Triac , Operation of the third circuit is much similar except that it has photo sensitivity. The circuit is shown in Schematic When there is no sufficient l....
Stitching Machine Motor Speed Control, Motor operated stitching machines have a series of carbon buttons in an enclosure operated by foot pedal. As the pressure on the foot pedal is increase....
Basic Oscillator (Tone Generator) At 1.8 KHz, IC 555 , Here we have an astable oscillator built around 555, which gives an alarm tone of 1.8 KHz directly driving a speaker. This is basic alarm circuit, whic....
IC 555, Light Alarm (Sun Up Alarm) , This circuit designed to sound a loud alarm at the break of the dawn especially for those wh cannot wake up even with an alarm clock. Circuit can be modifi....
1.5 Volt Tracking Transmitter, Simple circuits , The current draw for this tracker is 3.7mA, so the 1.5V button cell will last awhile. What the heck am I suppose to hear you ask? When your circuit is....
The Automatic Forklift System (AFS) is designed to make the process of stocking warehouses safer and more efficient. With current manually operated forklifts, employees are at risk of injury. The Automatic Forklift System (AFS) is designed to make the....
For my final project, I decided to make a line-follower robot. This micro controller line follower robot is designed to be able to follow a black line on the ground....
