General Purpose Bench/Utility Amplifier

The design of the circuit was intended to produce a signal tracer, bench amplifier, or output amplifier of personal radios.

Voltage Rating Tester for Zener Diode

The circuit has been constructed to test and measure the voltage rating of zener diodes.

Low Frequency Wien Bridge Oscillator

The circuit was created to produce an oscillator operating at low frequency for use in the production of electronic music and experimenting and testing tone controls.

CMOS-Based Logic Probe Circuit

The circuit was designed to create a handy logic probe that can show off the logic states for high, low and pulsing outputs with the use of CMOS 4001 integrated circuit.

Circuit Continuity Tester Using Op-Amps

The circuit was developed to produce a continuity tester with a low resistance mainly for checking the connections between soldered joints.

Electromagnetic Field Measurement Probe

The circuit was aimed to measure the variation in magnetic and electric fields by designing an electromagnetic probe with a headphone socket and an output meter.