Power failure emergency lights automatically converter circuit diagram
Posted on Mar 28, 2007
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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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The control voltage is fed into the first half of a 1458 op-amp, this stage inverts the signal...
This is the cheapest 150 Watt amplifier circuit you can get, I think. Based on two Darlington...
This is the schematic diagram of 300W power inverter circuit. The inverter uses power transistor...
In general there are two ways to control DC motor speed: by varying supply voltage and pulse...
Its a simple fly back tester, I believe you can built it, i use this circuit to test all of high...
Here is a solar charger circuit that is used to charge Lead Acid or Ni-Cd batteries using the...
This simple 12VDC to 220VAC inverter circuit produces an AC output at line frequency and voltage....
Although the modular Portable Mixer design available on these web pages has become a hit for many...
This simple logic probe has both LEDs on with no signal at the input but due to the nor gates...
This circuit allows you to superimpose a title and/or the time and sate on an incoming video...
His transducer is out of a humidifier and it operates at 48 Khz. It has the driver circuit too....
Circuit R1 R2 + RP + size branch resistance value determines the magnitude of the current I, the...
Chen is in the OP put too amplifying circuit, so that the comb over current feedback loop with...
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