Dual power supply circuit contactor mutual investment 2
Posted on Dec 11, 2010
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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 is designed to trigger on a 1 khz tone. to change this frequency - refer to the...
Here are some utility circuits for use with the Ramsey FM10a, and other small FM stereo...
This circuit simulates the sound of an American police siren. IC2 is wired as a low frequency...
This is the most popular IR Remote control circuit for home appliances like lamp, fan, radio, tv...
Using white LEDs for illuminating our homes is becoming popularnowadays, due to the high power...
The IC LM338 by TEXAS INSTRUMENTS, is a versatile IC which can be wired in numerous different...
Intercom walkie talkie are the next logical step in this discussion. They show how a crystal...
This is a simplest circuit for 100 watt inverter for generating 220vAC from 12vDC. I say simplest...
The basic digital circuits are Flip Flop and Counter, both are here. This circuit can be cascaded...
The circuit as shown in the figure employs 14 bi-colour (red and green) LEDs having three...
AC power is supplied via AC Fuse F1 and Power On/Off switch S1 to 6. 3V filament transformer T1....
The EMD SD45 was manufactured starting in 1965 so that it represents one of the newest prototypes...
I make a real-size printout of the PCB in order to verify dimensions of all parts against it....
The circuit composition determines that the LED adopts anodic Nixie tube. It can use LQ5101BS...
This battery-powered metal detector uses four exclusive-OR gates contained in the 4030 CMOS...
Adapting one of my failed Tesla coils into a crystal radio set to show the neighborhood kids....
Shown in forward and reverse dual interlock control circuit, on the basis of the
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