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Audio Power Meter: Shows Your Audio Amplifier – Circuit Schematic
Audio Power Meter: Shows Your Audio Amplifier
Using this circuit, you can measure the actual output power of your amplifier.? You can put this circuit in a box as a measurement instrument, or you can....
Analogue to digital converter circuit – Circuit Schematic
Analogue to digital converter circuit
That simple 4 digits converter circuit has OUTPUT COUNT = 1 according to my f-IMHz to 10.000. All diodes are IN4146 `POLYSTYRENE` NPO. The circuit uses the LF39...
Analog Tachometer Readout – Circuit Schematic
Analog Tachometer Readout
The analog display consists of a frequency/voltage converter (IC12) and bar-graph segment drivers IC10 and IC11. R34 is the calibration adjustment and is set so...
Ammeter and Precision Rectifier – Circuit Schematic
Ammeter and Precision Rectifier
Studying current measurement is a prerequisite for many of the measuring techniques. The current parameter mainly specifies the power consumption in a circuit, ...
AD8225 High Resolution Analog/Digital Converter (ADC)Circuit and Datasheet – Circuit Schematic
AD8225 High Resolution Analog/Digital Converter (ADC)Circuit and Datasheet
Rejection Ratio (CMRR) which enables rejection of high frequency common-mode voltage. This will result in the rejection of higher ambient levels of noise from u...
2N2497 Differential FET Voltmeter – Circuit Schematic
2N2497 Differential FET Voltmeter
Below is two single ended circuits which connected back to back give differential input. This circuit is not only has differential input feature, but also high ...
1Hz to 1MHz Frequency Meter with Digital Display – Circuit Schematic
1Hz to 1MHz Frequency Meter with Digital Display
The circuit was designed to create a low cost frequency meter that will cover the range of 1 Hz to 1 MHz with a digital indication using three 7-segment d....
10 Mhz universal counter – Circuit Schematic
10 Mhz universal counter
The ICM7216A or can be used as a minimum component complete Universal Counter. This circuit can use input frequencies up to 10 MHz at INPUT A and 2 MHz at INPUT...
Voltage and Current Limited Audible Continuity Tester – Circuit Schematic
Voltage and Current Limited Audible Continuity Tester
Using this continuity tester circuit, a failure of? PCB tracks be examined without looking directly at the tracks routing, which is can be very frustrating...
Low-Drift High-Impedance JFET DC Voltmeter – Circuit Schematic
Low-Drift High-Impedance JFET DC Voltmeter
The voltmeter shown in the schematic diagram below has very high impedance. The range selector uses conventional voltage divider resistors, but since the follow...
Frequency Counter Tachometer – Circuit Schematic
Frequency Counter Tachometer
For convenient reading, the display of this tachometer circuit show inthe reading in hertz directly.? The conversion time will be equal to the gating time,....
1 KW Watt Meter – Circuit Schematic
1 KW Watt Meter
This watt-meter circuit has measurement range up to 1-KW. This circuit can give the complete (X)(Y) function although uses only one transistor. Actually, this c...
DIY Digital Thermometer – Circuit Schematic
DIY Digital Thermometer
This diy digital thermometer circuit can measure temperatures up to 150 °C with an accuracy of ±1 °C. The temperature is read on a 1V full scale-deflection (...
Spectrometer – Circuit Schematic
Spectrometer
Strictly speaking, a spectrometer is any instrument used to view and analyze a range (or a spectrum) of a given characteristic for a substance (for example, a r...
frequency meter – Circuit Schematic
frequency meter
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frequency counter – Circuit Schematic
frequency counter
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DC Lessons In Electric Circuits – Circuit Schematic
DC Lessons In Electric Circuits
A meter is any device built to accurately detect and display an electrical quantity in a form readable by a human being. Usually this "readable form" is visual:...
gps driven clock compasss peedo – Circuit Schematic
gps driven clock compasss peedo
This project is a GPS based clock, which also displays the present date, automatically compensates for daylight savings time, displays current speed, and maximu...
LC meter – Circuit Schematic
LC meter
My Machtech tester is capable of metering the capacitors, but is very complicated to measure short lead capacitors, not speaking about SMD ones. Also, I needed ...
6.9 GigaHertz Chrono PC-based – Circuit Schematic
6.9 GigaHertz Chrono PC-based
Chrono or Chronograph, the term used by Airsofter and Paintball players to refer to the device that measures the muzzle velocity of firearms. This is also calle...