Collector-Base-Emitter Pin Identifier of Transistors

The circuit has been designed for transistors to determine whether the pin is emitter, base or collector as well as the type if NPN or PNP polarity, and can also be used in testing diodes.

In-Circuit Tester for SCR, Diodes, and Transistors

The circuit has been constructed to provide an in-circuit system that will test the integrity of electronic components such as Silicon Controlled Rectifiers, diodes, and PNP or NPN transistors.

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 displays.

Mini Spectrum Analyzer for Audio/Sound by LM3915

The circuit has been designed to create a spectrum analyzer that will provide an analysis of a sound to determine at various frequencies, the volume of sounds that make up the overall sound spectrum.

High Impedance DC Voltmeter using MOS Op-Amp

The circuit was designed for the purpose of creating a voltmeter with high impedance that would measure Direct Current voltages across any types of circuits.

Alternating Square Pulse Generator

The generator circuit was designed to produce alternating square pulses with vibrations in different parts of the circuit.