meter circuits
Posted on Feb 5, 2014
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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 project was designed and constructed as enhancement to the 0-30V Stabilized Power Supply...
The precision voltage-monitor chip contains a temperature-compensated voltage reference. R1...
Useful for checking TV remote controls, IR-based alarm systems, and IR sources, this circuit...
Triac regulation suited to regulate the power of mains appliances. It can regulate the brightness...
Using a LM1458 dual op amp IC. The circuit takes the audio signal rom the condenser microphone...
A small project that will make you expert in using these displays in your own projects. We will...
The receiver is a basic SA612 circuit. (U5 and U6) The LO for 20 meters is about 9 MHz and an IF...
This tiny circuit comprising of a single 3 terminal IC UM66 can be built small enough to be...
The TS2418 is a monolithic integrated circuit telephone Tone ringer with bridge Diode when...
The intercom schematic fulfills its tasks to provide a reliable communication line and is very...
Ford Thunderbird 1997 - Turned blower/fan on for air conditioning heard a snap under instrument...
A typical Colpitts oscillator design. This circuit is very similar in operation to the Hartley...
This is a pretty simple project we are going to do. We are going to create a simple buzzer...
Four 4, 8 Volt 2000mA Nickel Cadmium batteries. Does anybody here know a safe way of initial...
The signal from a synchro receiver or a variable resistive cam follower (potentiometer) is...
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