Transistor Circuits
Posted on Feb 6, 2014
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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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A 2N3904 in the base circuit sets the `Q' point of the amplifier. FM subcarrier audio at 4.5 MHz...
These parameters are expected with an approximately 50% square wave up to frequencies of seveal...
The power supply, with electronic stabilisation - mainly those of laboratories - it should they...
The article describes a simple and very cheap to drive white, blue or UV LEDs, used for example...
When the light beam that falls in the CDS photocell is interrupted, transistor (EN3904) conducts...
This is an ongoing project I`m working on which started as a circuit that I decided was necessary...
Take precautions against the coefficient is low, the safety is bad, the applicable space is...
A remote control light switch that fits into the existing light switch panel. And to power up the...
To see how RFM12B wireless compares to other similar wireless options (e. g Xbee, XRF etc. )...
The transformer is a 220V to 12V, 50Hz and 3. 6VA PCB type transformer. The model seen in the...
This circuit uses a couple of Op-amps to produce an interesting sound effect. The left hand CA741...
The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is...
When the power supply circuit, if taken as 15V, 10W power load available on. The main difference
Display counter circuit Explanation Here is a circuit diagram of a seven-segment on the counter...
Circuit works: At present, although the most commonly used method is to pulse width modulation...
220V AC by Cl buck, VDI rectifier, VD2 regulator and filter capacitor C2, output stable 12V DC...
Common intermediate frequency amplifier circuit having a circuit and on the radio as shown in...
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