555 the DC capacitor tester
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 monitoring circuit consists of four tri-color LEDs driven by an equal number of op amps...
This amplifier is useful for applications where a 10- to 15-W peak-envelope-power (PEP) signal...
NOR gates a and b form a low-frequency oscillator that is activated when the CDS cell, under...
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This is example project in which the 8051 is Producing PWM outputs for seperate two channels, The...
Pick whichever circuit is better for you, but the one using the LM339 is better. Both the...
A commercial motor controller is more than simply a circuit to alter the speed of the motor and...
Given below, is a very simple circuit that can be used for charging car batteries. In this...
The AN12974A Audio Power Amplifier features built-in AGC circuitry and Spatializer environ, . ,...
I`m doing this lab BCD COUNTER and 7 SEGMENT DISPLAY and im using CD4510BMS presettable BCD...
Attached are 3 captures from my L297/L298 board using the same motor at 500, 750 and 900...
All PIC IR Decoders share the same, easy to build, hardware. All parts for this hardware are...
All errors in circuit diagrams, documents and layout are corrected. The circuit as shown below is...
There are also other methods of coupling signals from one stage to another. Transformer coupling...
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