Use a PC`s parallel port to program a clock source
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.....
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Basically, this is a frequency-current converter. It is used as frequency meter. Calibrating it...
The charger is based on a charging voltage of 2.4 V per cell, in accordance with most...
This supply uses an SGS-Thomson UC3842 IC in an off-line flyback regulator, providing + 5 V at 4 A
Using a Motorola MC34118 speakerphone IC, this adapter can be used with a regular telephone to...
Normally 555 timer circuit even though the start push-button PB1 is not pressed, the timer keeps...
Portable 230V lamp flasher circuit diagram. The circuit is completely transistorised and...
Following a highly successful Kickstarter project and over a year of development, HexBright,...
This Blog show the Different Electronics Circuit Design, Application, Fields and Resources which...
Instructions to put together a small project on wireless energy transfer. If anyone knows of a...
The RF module, as the name suggests, operates at Radio Frequency. The corresponding frequency...
If possible, try to obtain TIP41 and TIP42 transistors, which are closely matched NPN and PNP...
The second method is to record (realtime) the actual bark in an analog CCD delay line (~100 msec...
The RF stage of the receiver is based on a transistor VT1, this stage works as a mixer and a...
Adjustable dual voltage power supply lines shown, can be used as a power supply line frequently...
All input is compatible with TTL. Each output is a complete totem pole driver circuit, Darlington...
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