CW117 CW217 CW317 12V constant-voltage charger
Posted on Mar 28, 2007
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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Please find attached your copy of my four foot unampilfied box loop. It will tune from 525 kHz...
Times have changed and there is no need to keep your elaborate electronic project in an old cigar...
This circuit was designed to make switching of a 48-channel mobile transceiver safe to operate...
An operational amplifier can be used as a convenient device for analog comparator applications...
The circuit is basically a 555 astable circuit that divides two LEDs, LEDl and LED2. LED2 is...
Using an oscillator running at 455 kHz, the metal-detector circuit produces an indication on the...
The alarm circuit has a single 555 oscillator/timer (Ul) performing double duty; serving both in...
Specificaly for the chip that is used in this circuit data are like this: Oscilator runs at freq...
I bought a solar powered garden light. The solar panel charges the batteries and when it gets...
A simple FM transmitter links your home-entertainment arrangement to a carriageable radio that...
This circuit demands a control current that is 100 times smaller than that needed by a typical...
The "green area" is where should be placed the TRF7970A `s antenna (Between 0 ohm resistors, the...
Before we study the working principles of a TV receiver, it is worth knowing a little about the...
This circuit in below is show the simple form of the thermometer circuit. The circuit is based on...
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