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decibel meter circuit – Circuit Schematic
decibel meter circuit
The series of decibel meter function to determine the level of signal strength that is given to the speaker on the audio system. Decibel meter circuit is often ...
10hz 60mhz frequency meter – Circuit Schematic
10hz 60mhz frequency meter
The frequency meter can be used to measure the frequency of 10 Hz-60Mhz. The frequency meter has a level of precision or resolution of 10Hz. The frequency meter...
how to build digital step km counter – Circuit Schematic
how to build digital step km counter
This circuit measures the distance covered during a walk. Hardware is located in a small box slipped in pants` pocket and the display is conceived in the follow...
web based thermometer project – Circuit Schematic
web based thermometer project
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led display digital voltmeter – Circuit Schematic
led display digital voltmeter
This is an easy to build, but nevertheless very accurate and useful digital voltmeter. It has been designed as a panel meter and can be used in DC power supplie...
digital voltmeter – Circuit Schematic
digital voltmeter
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battery meter for pinball machines – Circuit Schematic
battery meter for pinball machines
The circuit is designed to be fitted into a small box and then fitted into your backbox (the exact choice of position is yours). Only 3 wires are required one f...
How to build a zener diode tester – Circuit Schematic
How to build a zener diode tester
This is a circuit to test zener diodes. It hooks up to a 120V AC line and boosts the output .....
zener diode tester – Circuit Schematic
zener diode tester
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how to make simple frequency counter – Circuit Schematic
how to make simple frequency counter
A very simple frequency counter circuit is shown below and can be easily built by any electronic enthusisat for the intended purpose. The circuitdiagramwas prov...
simple frequency counter circuit – Circuit Schematic
simple frequency counter circuit
The circuit shown below can be used for measuring frequency or Hz. The IC is very simple to make andutilizesjust a single IC 4033 and a common cathode display a...
Power Monitor – Circuit Schematic
Power Monitor
The purpose of this project was to be able to monitor the power consumption at my house. In addition to total usage, I wanted to be able to separately monitor &...
bicycle generator circuit – Circuit Schematic
bicycle generator circuit
The original scale on my voltmeter was from 0 to 30volts. I made a new scale by removing the old scale from the meter and scanning it into a paint package on my...
Gas Meter circuit – Circuit Schematic
Gas Meter circuit
Meteoplug is a client-server. The client application needs minimal storage and computing power, which allows for embedding into "computers" of minimal size and ...
50MHz frequency counter V-meter & SWR/PWR indicator – Circuit Schematic
50MHz frequency counter V-meter & SWR/PWR indicator
This is a successor of the PIC16C71 4-digit LED f-counter & V-meter. Some hard to find parts used in the previous version, which are out of production for some ...
Block Diagram of the CT Scanner – Circuit Schematic
Block Diagram of the CT Scanner
The CT Scanner is the abbreviation of computer tomography scanner. The invention of CT Scanner in 1970 was made possible by a previously established insight and...
AC-DC Microammeter Circuit – Circuit Schematic
AC-DC Microammeter Circuit
Here s a design circuit that is used to active circuitry and an analog meter to make sensitive DC current measurements. A reader subsequently asked if it could ...
Frequency to voltage converter circuit – Circuit Schematic
Frequency to voltage converter circuit
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Digital voltmeter using icl7107 circuit – Circuit Schematic
Digital voltmeter using icl7107 circuit
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GPS Synchronised Clock – Circuit Schematic
GPS Synchronised Clock
This project replaces the electronics in a standard quartz wall clock with a circuit that uses GPS satellites to get the precise time.....