Video amplifier 1
Posted on Feb 18, 2013
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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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4 simple 12Vdc power supply circuits with output voltages around 12V. First power supply circuit...
This circuit is a circuit diagram generator melody. This circuit controlled by the IC UM66. The...
Here the simple and low cost FM transmitter circuit. The frequency range of this FM transmitter...
This is a microphone pre-amp which I designed intended for function with a SoundBlaster(TM) AWE...
The circuit is basically a radio frequency (RF) oscillator that operates around 100 MHz. Audio...
Remote controls are part of an electronics device used for operating the device remotely. Remote...
This little project came about as a result of a design job for a client. One of the items needed...
This is the circuit diagram of a very sensitive electromagnetic field sensor which can sense...
An AC triggered Multitone, polyphonic doorbell. It gives eight melodious tunes for 2 minutes. On...
The purpose of this project is to develop a self sufficient Mailbox (real one) that will be...
This low-cost AM transmitter is tunable from 10 to 15 MHz with the help of ½J gang condenser VC1,...
This is the schematic for an FM transmitter with 3 to 3. 5 W output power that can be used...
Voltage is transformed by the transformer turns ratio N2/N1. For instance if 20VAC secondary...
Here`s a dual-band Regen that came from some encouraging emails from Jerry (K9UT) and another...
a typical rf amplifier that is used in an AM radio receiver. In figure 2-19, the input circuit is...
As shown in the circuit diagram of the feeding tube Swallow CS37-2 type color TV. Filament...
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