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.

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.

Voltage Rating Tester for Zener Diode

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

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.

Signal Injector and Tracer Circuit

The circuit was designed to produce a simple test circuit for monitoring, tracing and locating any fault or defect in a radio or analog equipment and other electronic circuitry.