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Measurement – Circuit Schematic
Measurement
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Oscilloscope – Circuit Schematic
Oscilloscope
For the purpose of this project, digital signals can be communicated with computers while analog signals can`t. RS232 is the name given to your serial port. At ...
Frequency Counter – Circuit Schematic
Frequency Counter
I needed an excuse to use the soldering iron so I figured that I might as well as make a frequency counter which is something that I`ve always wanted, but lacke...
Digital Voltmeter – Circuit Schematic
Digital Voltmeter
In the voltage to time conversion section, the analog input voltage is fed to the attenuation circuit. The attenuated signal is compared with the the ramp signa...
ramped magnetic field circuit for a miniature mass spectrometer – Circuit Schematic
ramped magnetic field circuit for a miniature mass spectrometer
The general idea is to space the time internals to increment the DAC output values. There would be 256 levels since there are 8 digital outputs from the Arduino...
Enclosure for the Magnetometer v2.0 – Circuit Schematic
Enclosure for the Magnetometer v2.0
The magnetometer was moved to an outdoor location and a specialized enclosure was built. An accessory temperature controller was included to maintain a constant...
Module thermometer temperature meter for digital multimeter using the ic lm35 – Circuit Schematic
Module thermometer temperature meter for digital multimeter using the ic lm35
Converser of temperature tension. To be used with a digital multimeter with reach from -40 °C to 110 °C. With checker of the state of it laughed and a without...
Optical Pulse Generator – Circuit Schematic
Optical Pulse Generator
This little aid was originally designed to test the Shutter Time Meter. This meter was specifically designed for analogue` SLR cameras. In order to measure the ...
Mains Voltage Monitor – Circuit Schematic
Mains Voltage Monitor
When the push button is pressed, a clock pulse appears on the CLK input of flip-flop IC1b. The output then toggles and the LEDs turn off. At the same time IC1a ...
Single Display LED Frequency Counter – Circuit Schematic
Single Display LED Frequency Counter
As equipment becomes increasingly more compact, designers are often obliged to follow suit by reducing the size of displays. At some point, the usefulness of th...
RF Decibel Meter – Circuit Schematic
RF Decibel Meter
This is a zine dedicated to electronics circuit diagrams, diy (do it yourself) electronics projects, electrical electronics data sheets, and micro controller pr...
Measuring Impedance with Circuit Maker – Circuit Schematic
Measuring Impedance with Circuit Maker
To measure the input impedance of an unknown circuit first set the signal genaerator to a current source of magnitude 1 amp. You also need a shunt resistor of 1...
50hz Calibration aid for Multimeters – Circuit Schematic
50hz Calibration aid for Multimeters
The purpose of this prototype unit does away with the need for an oscillator. It offers a mains-derived and fully variable 50 hz AC volts down to millivolts for...
50 MHz frequency counter voltage meter & SWR/PWR indicator – Circuit Schematic
50 MHz frequency counter voltage 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 ...
Sensitive RF Voltmeter Probe – Circuit Schematic
Sensitive RF Voltmeter Probe
Sensitive RF Voltmeter Probe Circuit This Circuit measures RF voltages beyond 200MHz and up to about 5V. PARTS LISTR14.7M?R21M?R31M?R4100k?R5330?R610k?R710k?VR1...
ADC0808 - Simple Analoque to Digital Converter – Circuit Schematic
ADC0808 - Simple Analoque to Digital Converter
This is a very simple analoque to digital converter circuit based on 8-bit analog-to-digital converter ADC0808. Typically analogue-to-digital converter (A/D Con...
Simple Battery Level Indicator – Circuit Schematic
Simple Battery Level Indicator
Here the circuit diagram of simple and easy made battery level indicator. In general, in mobile phones, the battery levels is displayed in dot or bar style. Thi...
Phase indication by vectorscope – Circuit Schematic
Phase indication by vectorscope
You will need an oscilloscope capable of displaying in X/Y mode, and a reference "LO" signal source. In-phase and Quadrature reference square wave signals are g...
Ammeter – Circuit Schematic
Ammeter
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Crystal Tester – Circuit Schematic
Crystal Tester
I needed to test some crystals for a project I was working on. I found lots of testers on the internet, but they all where lacking in one thing or another. I de...