Zener Diode Voltage Tester

The circuit was designed to provide a means for measuring the operating voltage of zener diodes before applying on a circuit.

Power Amplifier Measured by VU Meter

The circuit was designed based on the functionality of LM3915 integrated circuit to produce a volume unit meter (VU Meter) that will be connected to the output of power amplifier.

1 KHz Frequency Wien Bridge Oscillator

The circuit was designed to create an electronic oscillator known as Wien Bridge Oscillator which can be used for the creation of low frequency sine wave signals.

Op-Amp-Based Wien Bridge Oscillator

The circuit was designed based on the functionality of an op-amp to create a Wien bridge oscillator to generate sine waves in the frequency range of 15 Hz to 150 kHz that is channeled using four switch stages.

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.

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.