Photocell Amplifier
Posted on Feb 12, 2013
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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This circuit us gives the sense of movement of ball up down, after the LED turn on successively...
Cl, C2, and C3 are miniature ceramic or plastic trimmers- Tl (main winding) is 0.34 µ,. Use of...
The circuit exploits the fact that when fed from a constant current source, the forward voltage...
This circuit can generate high-voltage pulses with an inexpensive auto ignition coil. Add a...
A simple voltage-controlled oscillator (VCO), coupled to your instrumentation by an...
The following is my modification of the Headlight wiring for 240Z`s. I made this modification in...
Light dimmer circuit is using to adjust the illumination of lamp. The below circuit shows the...
The following schematic has been taken from buildcircuit. com. The following circuit can work as...
Most homes today have at least a few infrared remote controls, whether they be for the...
Under dry conditions, the transistor will have no bias current and be fully off. However as the...
A RF probe is a circuit for testing equipment that converts a high frequency signal into a DC...
This kind of sensor switch is suitable for making touch operated bells, buzzers of small toys...
Usually a single telephone is connected to a telephone line. If another telephone is required at...
How to use your existing infrared transmitter from any room in the house. The principal is really...
The ISL6315 two-phase PWM control IC provides a precision voltage regulation system for advanced...
The Precision VXO (PVXO) and its matching Crystal Test Fixture (CTF) were created to provide a...
When the input goes from low to high, a narrow positive pulse is generated at point A. This pulse...
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