Monostable to bistable relay with momentary switch
Posted on Jan 31, 2013
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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 use of pulse width modulation (PWM) is common for the use of controlling power to a...
Use a pair of Maxim"s 5V-powered MAX231 RS-232C transmitters as drivers to obtain a 2-color LED....
This circuit in below uses two quad voltage comparator using IC LM339 to illuminate a series of 8...
An electronic recitification circuit. The use of large, heavy and expensive electrolytic...
When Q1 is active, a larger current begins to flow through L1 to GND. When Q1 is switched off,...
The halogen or krypton bulbs in modern torches (USA and Canada: flashlights) have a limited life...
The IC produces all the sound effects, the output at Pin 3 being amplified by the transistor. A...
This phone is loud ringing tone circuit for generating the electricity bell in the old telephone....
A very simple and useful electronic bell circuit can be made using this schematic circuit...
This is a less expensive, and DIY option for a hearing aid. It is not a substitute for a real...
This PC fan controller circuit is designed with discrete components and is used to control 12 V...
As shown in FIG, RTD using Pt100 type thermocouple. When the temperature is 100 ~ 600oC when,...
Automatic electric furnace temperature controller shown. The closed circuit is formed from a...
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