Repository-circuits
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This circuit operates at potentially lethal 220V AC mains voltage. The circuit should be built and used only by people who know hot to safely work with such dangerous voltages and how to built the circuit so that it is safe to use. Solid-state light dimmers.... -
This handy circuit can be used as a speed controller for a 12V motor rated up to 5A (continuous) or as a dimmer for a 12V halogen or standard incandescent lamp rated up to 50W. It varies the power to the load (motor or lamp) using pulse width modulation.... -
Here`s a very simple, but practical circuit, which is used to check the type of LAN cables (straight or cross) as well as possible faults. So we use a unit that has 8 outputs, each one of which produces a pulse successivly. Only one output can be high at any.... -
This simple device allows two computers to share a single USB printer or some other USB device, such as an external flash drive, memory card reader or scanner. A rotary switch selects the PC that you wish to use with the USB device, while two LEDs indicate.... -
Sound mixer circuit of Service This mixer is easy to implement and Expensive as it consists of 2 transistors And some simple resistors and capacito... -
Provision in the speed of a small engine DC Motor speed control circuit of Service By a small rheostat control In DC motor Circuit diagram... -
Build A 20 Amp 13.8 Volt Power Supply Row circle There are some applications Electronic that you may need to run a relatively high current circuits such as tra... -
Frequency Meter Circuit of Service Include all the standard frequency bands amateur hf and vhf and uhf And displayed on the LCD screen This is to e... -
Robot eyes circuit of Service A simple circuit to simulate a man appointed to It is a dual-lamp working in a manner UNSTEADY Circuit diagram... -
Telephone ring amplifier of Service Speaker phone ringing bell Circuit diagram Electronic items Resistance of 33 kilo ohms 2 Resistance 47 Kilo Ohm... -
This multitone electronic siren is useful for burglar alarms, reverse horns, etc. It produces five different audio tones and is much more earcatching than a single-tone siren. The circuit is built around popular CMOS oscillator-cum-divider IC 4060 and small.... -
One of the most popular electronic IC number. There are many different symbols depending on the firm and ability to meet such as 74HC47, 74HCT47, 74LS47, . This is a sign dedicated decoder IC for LED 7-segment common anode. Application when it needs to.... -
miRover. This pages details how to use a PIC microcontroller and an H-bridge or a L298 to drive a Bipolar stepper motor.. -
The acronym FACTS stands for “flexible ac transmission systems.â€These systems add some of the virtues of DC, i.e., phase independence and fast... -
A distribution substation, is characterized by the apparent power of the transformer and whether it is aerial, terrestrial or underground.. -
Electrical lines which include lighting circuits begin from the main distribution panel of the installation and each line contains three conductors: phase, neutral and ground. All three conductors reach to the terminal point of each luminaire and if it has a.... -
Frequency converters are protected from surges with surge protective devices for which the maximum continuous operating voltage Uc has to be taken... -
Here I have described how to connect a 16 by 2 LCD display to a microcontroller. Here I have demostrated it with very common pic 16F877A. This is the circuit diagram. Here I haven`t showed the power supply and oscillator connection for pic and LCD. LCD....
New Circuits
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This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of.... -
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.... -
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.... -
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.... -
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.... -
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,.... -
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.... -
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.... -
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.....
Popular Circuits
This is a circuit for alternative sources selection. It combines mechanical selection using a...
The 555 circuit below is a flashing bicycle light powered with three C or D cells (4.5 volts)....
The circuit operates from a 5-V supply arid has a current consumption of 2 mA. The output is a...
Four appearance drive signals for two appearance bipolar and four appearance unipolar footfall...
Electronic FM Telephone Transmitter SchematicThe following schematics design pictures is a...
This circuits allows you to use a cheap loudspeaker as a microphone. Sound waves reaching the...
This circuit is designed to output both a sine wave and cosine wave. This particular design uses...
One thing we should keep in mind is that the EC10 is now a vintage receiver, it has collector...
Circuit principle : ultrasonic anti-collision circuit is shown, when the LM1812 circuit by...