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serendipity – Circuit Schematic
serendipity
The above circuit is a fluid level meter that converts the level in the container on the left into a single-digit number, from 0-9 on a seven-segment display. I...
Using the Panasonic WM61A as a Measurement Microphone – Circuit Schematic
Using the Panasonic WM61A as a Measurement Microphone
Measurement microphones differ from recording microphones and sound meters-they have a flat response, (usually to well below 20 Hz. , and above 20 kHz. , ) and ...
Speed of Light with an IR LED – Circuit Schematic
Speed of Light with an IR LED
The speed of light has been measured many different ways using many ingenious methods. The following note describes a method which is conceptually easy to under...
Speed of Light with Nanosecond Pulsed 650 nm Diode Laser – Circuit Schematic
Speed of Light with Nanosecond Pulsed 650 nm Diode Laser
The speed of light has been measured many different ways using many ingenious methods. The following note describes a method which is conceptually very easy to ...
YAMAMOTO PANEL METERS – Circuit Schematic
YAMAMOTO PANEL METERS
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tube tester – Circuit Schematic
tube tester
The meter has only one scale (0. 150) but this also used for 0. 75 and 0. 30. This is such a pain, and all people use a calculator with it. I made a new meter s...
gmcounter – Circuit Schematic
gmcounter
The GM Counter Accessory is shown below. It can generate a DC voltage upto 1 KV using the 5V pulse generated on PWG. The duty cycle of the pulse is varied to co...
EEG Recording System – Circuit Schematic
EEG Recording System
Continuous monitoring of brain activity is essential in understanding neural substrates of many physiological and pathological brain functioning. Low amplitude ...
3-D Depth Finding Imager with Digital Readout – Circuit Schematic
3-D Depth Finding Imager with Digital Readout
The objective of the project is the design of an imager chip for laser-scanned 3-D depth/range finding. The project is divided into two modules: Pixel Array/Cen...
Dual-Slope Integrating ADC – Circuit Schematic
Dual-Slope Integrating ADC
A column-parallel analog-to-digital converter was designed for use with CMOS active pixel sensors (APS). The design goals included simplicity, small size, moder...
ICL7106 1/2 Digit LCD/LED Display A/D Converters – Circuit Schematic
ICL7106 1/2 Digit LCD/LED Display A/D Converters
The Intersil ICL7106 and ICL7107 are high performance, low power, 31/2 digit A/D converters. Included are seven segment decoders, display drivers, a reference, ...
Peak Detector Circuit – Circuit Schematic
Peak Detector Circuit
A Peak Detector is any circuit that functions to detect the peak voltage of an incoming waveform. Basically the circuit is used as an Amplitude Modulation [AM] ...
Analog and Digital Converters – Circuit Schematic
Analog and Digital Converters
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Advanced Simulation for ESD Protection Elements – Circuit Schematic
Advanced Simulation for ESD Protection Elements
Series of current pulses are imposed on the structure simulated, and average currents of the 70%~90% section of each curve are calculated, (b) Voltage vs. time ...
Two chip Frequency Meter with binary readout circuit – Circuit Schematic
Two chip Frequency Meter with binary readout circuit
Now, when the construction is nearly done, here is a circuit diagram. When I finally settled on how it was going to be done, and set it down on paper,.....
Microcontroller interface electrometer – Circuit Schematic
Microcontroller interface electrometer
My daughter wanted a way of measuring static for her science project. While scanning through an old copy of Getting Started in Electronics by Forres.....
Frequency Counter Schematic diagram – Circuit Schematic
Frequency Counter Schematic diagram
As you can see, there are few parts to this design, really just the ATmega328p-pu microcontroller and the LCD display. Both of them require a steady +.....
ECG Simulator Schematic – Circuit Schematic
ECG Simulator Schematic
Below is the final schematic for the Menta ECG Simulator project. LadyAda`s Eagle schematic for the Menta was used as a starting point and I simply ad.....
Coin Counter circuit – Circuit Schematic
Coin Counter circuit
The next counter section works the same way but is set up to count 4 quarters, single $1 (loonies) and single $2 (toonies). The toonies circuit is set.....
Anderson Powerpole Polarity and Voltage Tester – Circuit Schematic
Anderson Powerpole Polarity and Voltage Tester
Here is a small device for HAM amateurs, how using powerpole connectors to connect ham gear to unknown power supply with powerpole connector. But you.....