« Electronic Circuits Homepage

One: Beep Buzzer

Photo: Game Show / Quiz Buzzer Circuit Game Show / Quiz Buzzer Circuit
Our game show buzzer performs exactly the same task as the ones that you see on TV. It allows up to 8 players to play.
Photo: Hobby Power Supply Kit using LM7805 Hobby Power Supply Kit using LM7805
This is a practical battery eliminator for your projects. This is a basic power supply using two 7805 regulators; input up to 20 VAC from a transformer. There are two outputs; one regulated at 5 VDC, and the other one is variable. Includes plastic case. T
Photo: Oscillator Building Blocks Electronic Kits Oscillator Building Blocks Electronic Kits
An educational learning module. Build and experiment with the astable, monostable and RS flip-flop multivibrators on one PC board with six LED's. Understand exactly how each one works. Operates on a 9 Volt battery.
Photo: Programmable Dice Electronic Kit Programmable Dice Electronic Kit
The idea of an electronic dice game of one kind or another is almost as old as glaciers. But this one is very clever and includes software on a floppy (IBM PC) plus a huge manual describing how it works. This is a very educational kit.
Photo: Multi Mode Timer Circuit Multi Mode Timer Circuit
This timer kit contains seven different timing modes using only ONE IC and some support components on a single-sided PCB.