Auto Car Battery Testers circuit using LM3914
Archives for Test equipment
Range Meter Circuit
Radio Frequency Meter – Range Meter Circuit Schematic diagram of the signal strength meter – Range Meter Circuit using 1N4148
Infrared Motion Detector schema diagram
Infrared Motion Detector electronic circuit schematic diagram Using TR 2N2222, SY32PT
NPN – PNP Transistor Tester Circuit using 3906
NPN-PNP Transistor Tester Circuit using 3906
Circuit and Making Schema Alarm LED – speaker – remote – radio – for Car
I decided to build a compact, yet effective alarm. My demands were:- simple construction, reliable operation, very small power consumption, and, most of all, small size. I started with CMOS logic gates, but was soon forced to abandon the concept after a few unsuccessful attempts. Then I suddenly realized that a simple transistor switch might […]
Audio Amplifier Circuit using STK4311
Audio Amplifier Circuit Audio Amplifier Circuit using STK4311
A simple switching transistor circuit
A simple switching transistor circuit to test
