Light Sensitive Switch

Demonstration of a simple light sensitive switch made with an op-amp configured as a comparator. Obtain schematics for Free at

Negative and Positive Voltage From A Dual Power Supply

In this video, I describe the proper way to simultaneously obtain negative and positive voltage from a dual power supply.

Simple Calculator

Demonstration of a simple calculator made of seven segment displays, seven segment drivers, AND, OR, NOT, and EXOR gates that add two numbers together.

Using a Protoboard Part 3

Using a Protoboard Part 2