Low power timer switch
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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The particular circuit does?t have the requirement to replace the trade decoders Surround,...
This is another kit in our self-sufficiency range. We also have a 12v fluoro inverter kit for...
The JFETs, Ql and Q2, provide complete buffering to Cl, the sample and hold capacitor. During...
This regulator provides 12 V at 1 A out with an input voltage of 8 to 20 V. Output voltage can...
MP3 players are all the rage these days. The smaller ones in memory-stick format are particularly...
1000W Power Inverter circuit diagram: This is the power inverter circuit based MOSFET RFP50N06....
The requirements for electric energy quality of modern industrial development are higher and...
Design a circuit in which a microcontroller produces a signal and then using an amplifier drives...
This generally results in a square wave if the frequency of oscillation is low enough relative to...
I have developed an inexpensive control system (less than $70) that can be used to both get more...
The CMX867A is a multi-standard modem for use in telephone based information and telemetry...
This simple PC parallel port ADC has 12 b resolution, four differential input channels and is...
This is a battery powered IR Link which may be used in more than one room. The standby current is...
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