Vacuum Tubes Valves
Musical & effects
Yagi Uda Antennas
Metal Detector Circuits
Liquid Sensing Circuits
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Voltage Detector Circuits
Air-Gas Detection Circuits
Human Sensing Circuits
RF & Radiation
Optical Sensing Circuits
Free Energy Circuits
AC to DC & DC to DC
Solar Cell Circuits
Micro Power Circuits
Switching Power Supplies
Light Laser LED
Digital to Analog
Analog to Digital
Data Bus Circuits
Voltage to Pulse
Current to Voltage
Frequency to Voltage
RF Converter Circuits
Sine to Square Wave
Voltage to Current
voltage to frequency
Period to Voltage
Video Wall circuits
TV Video Circuits
Motor Control Circuits
8051 / 8052
PCB CAD Software
Car bike Circuits
555 Timer Circuits
Remote Control Toy
H Bridge Circuit
DIY HV Variable Cap
DIY PMA alternator
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
Sensors & Detectors
Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
Power Supply Circuits
Switching Power Supply Circuits
Switching Power Supply Circuits
Few Switching regulator circuits
Switching regulators work by drawing small amounts of energy from the input source and transferring it step by step to the output. This task is attained by using an electronic switch (operating at a predetermined frequency) which works like a gate between the input energy source and the output. This gate controls the amount of charge that is trans
Switching Voltage Regulators-Step up Step down and polarity invert
Switching Voltage Regulators-Step up, Step down, and polarity inverting configuration, working, and circuit diagram..
High Input Voltage Off-line Flyback Switching Power Supply Using Fsc Igbt (sgl5n150uf)
Very Wide Input Voltage Range Off-line Flyback Switching Power Supply
250 kV High Voltage DC Power Supply with Neat Trick for Switching Polarity
The Cockroft-Walton multiplier uses a cascaded series of diodes and capacitors to generate a high voltageDC potential from anAC input through acircuit topology thatuses diodes to charge capacitors in parallel and discharge them in series. The output polarity of the Cockroft-Walton multiplier depends on the way in which its diodes are oriented, so
PC Switching Power Supply schematic using TL494/LM339 IC 2003 & KA7500
Here is a collection of (SMPS) schematic, datasheets, images and tips for switch mode power supplies using TL494/ LM339, KA7500 and IC2003..
step down switching converter
High-efficiency step-down switching regulators for positive voltages are very common, however negative step-down switching regulators (negative voltage in, negative voltage out, common ground) are not as well known, even though they are often needed. Although they are not difficult to set up, literature on how to build them is rather scarce....
Cheap Switch-Mode DC-DC Converter
This circuit is based on mobile phone chargers. These chargers are based on the Motorola MC34063 switchmode IC. By changing the values of the feedback resistors (R1 & R2), the output voltage can be varied over a wide range. Just modify R1 and R2 according to the formula: Vout = 1. 25 (1+R2/R1). The values shown give an output of 3V.
Easy 5V 10A switching regulator by L4970A
Friends that seek 5V 10A power supply circuit small-sized and build easy. I begs for to advise this circuit. It is 10A switching regulator by use IC L4970A. Then build easy as an example integrated readymade circuit. Important point be power supply input must have 10A current sizes then can give power get enough. The detail is other of the...
LM2673 -5V 3A Switching Voltage Regulator
This is the DC switching regultor Voltage 5V at current 3A. It is make for digital circuit. The important part of the circuit is LM2673, it is 3A Step-Down..
switching between parts circuit pulse input
This is a 9V DC power source, to a 555 timer to get a square wave. Then fed through a Half-Wave Series Multiplier (Villard Cascade) to get a high voltage DC output. Ideally I want to be able to send a single pulse at 5V pulse from a micro-controller to the switch to change the resulting output of the system between those two points. I think that I
switching ac loads triac
A circuit to turn on/off a couple of big AC solenoid valves and a couple of 1ph ac motors. my line v is 132VAC and the solenoids measure 1A and the motors measure 13A and 27A once running. does anyone know how to do this with triacs they are much cheaper than relays. I have found much info on "snubberless", "alternistors", etc. I just want to...
ac switching question
The AQV20 series should be fine to drive an A. C. relay coil if the de-energizing back EMF from the relay coil does not exceed 600 v rating. It is diode in series with a conducting MOSFET. Might want to add two back to back zener surge suppressors across relay coil to be sure. That SSR should work fine for you application. It`s input is isolated fr
12 volt switching power supply using LTC3810-5 switching regulator
Using the LTC3810-5 synchronous step-down switching regulator controller can be designed a very easy and simple 12 volt switching power supply electronic project using few external electronic parts. LTC3810-5 synchronous step-down switching regulator controller can directly step-down voltages from up to 60V, making it ideal for telecom and automo
FAN302HL 5 volt switching power supply circuit design electronic project
A very simple 5 volt switching power supply electronic circuit project can be designed using FAN302HL highly integrated PWM controller integrated circuit, that provides several features to enhance the performance of general flyback converters. The constant-current control, of the FAN302HL proprietary topology enables simplified circuit designs wit
LMZ13608 8A switching power supply circuit design
A very simple high efficiency switching power supply electronic circuit project can be designed using the LMZ13608 8A regulator. This 8A switching power supply regulator electronic project based on the LMZ13608 has an very high efficiency and require few external electronic parts. This switching power supply project supports a wide input voltage
MAX668 16V 4.4A switching power supply circuit design electronic project
A very simple 16 volt switching power supply electronic circuit can be constructed using this circuit diagram that is based on the MAX668 constant-frequency, pulse-width modulating (PWM), current-mode DC-DC controller that is designed for a wide range of DC-DC conversion applications. The MAX668 integrated circuit supports a wide input voltage ra
MC33374 high power voltage switching regulator
This switching power supply circuit diagram is based on the MC33374 high power voltage switching regulator IC manufactured by Motorola Semiconductor. This MC33374 switching power supply circuit will provide a maximum output power around 90 W and require few external components. The MC33374 switching regulator IC is designed to operate directly f
5000W ultra-light high-power amplifier without switching-mode power supply
This circuit is of an 2x 2, 500W RMS stereo amplifier, super-light and without switching-mode power supply. The circuit just shows a channel, and the power supply that it assists to the two channels. The audio circuit should be duplicated, but the power supply assists to the two channels without problems. A special care should be destined to the in
ISL62386 High-Efficiency Quad Output System Power Supply Controller for Notebook Computers
The ISL62386 controller generates supply voltages for battery-powered systems. The ISL62386 includes two pulse-width modulation (PWM) controllers, adjustable from 0. 6V to 5. 5V, and two linear regulators, LDO5 and LDO3, that generate a fixed 5V output and a fixed 3. 3V output respectively. Each can deliver up to 100mA. The Channel 2 switching...
ISL62382C High-Efficiency Quad or Triple-Output System Power Supply Controller for Notebook Computers
The ISL62381, ISL62382, ISL62383, ISL62381C, ISL62382C and ISL62383C family of controllers generate supply voltages for battery-powered systems. These controllers include two pulse-width modulation (PWM) controllers, adjustable from 0. 6V to 5. 5V, and two linear regulators, LDO5 and LDO3, that generate a fixed 5V and an adjustable output...
Soft Start For Switching Power Supply
Switching power supply whose output voltage is appreciably lower than its input voltage has an interesting property: the current drawn by it is smaller than its output current. However, the input power (UI) is, of course, greater than the output power. There is another aspect that needs to be watched: when the input voltage at switch-on is too low
2w switching power supply
digital switching system
This circuit can control any one out of 16 devices with the help of two push-to-on switches. An up/down counter acts as a master-controller for the system. A visual indication in the form of LEDs is also available. IC1 (74LS193) is a presettable up/ down counter. IC2 and IC3 (74LS154) (1of 16 decoder/demultiplexer) perform different functions, i. e
Design of a switching frequency adaptive slope compensation circuit DC converters
High voltage switching stabilized voltage supply circuit
High voltage switching stabilized voltage supply circuit is shown in the diagram. It is the switching power supply of 80P type color TV. It adopts auto-excitation, PWM circuit. Its output is isolated with power system. This power supply has 110V and 18V DC voltage output. The power supply consists of power frequency rectification filtration...
Isolated switching power supply circuit diagram
Micro-switching power supply circuit diagram
Output sampling winding isolated switching power supply
The diagram shows the output sampling winding isolated switching power supply. In diagram, T is high frequency transformer; N2 is self-oscillation positive feedback winding; N3 is the error amplifier, and VTSis thewinding to provide sampling signal; N4, N5are DC output windings. DC output and the power gridare isolated from each other, because...
QiSheng DVD-8829 switching power supply circuit diagram
Regulated votlage micro-switching power supply (3W-10W circuit diagram)
200W ATX switching power supply circuit diagram
Free Energy Circuits
Battery Charger Circuits
AC-DC & DC-DC Circuits
Solar Cell Circuits
Current Limiting Circuits
Micro Power Circuits
High Voltage Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity