Simple AM receiver circuit with earphone
This am radio receiver circuit with earphone is a saving version that use a few parts, cheap , easy to build and suitable to be assembled to study,3V batt. Read more
5 DC/AC Blown Fuse indicator circuit with LED Display
This is Blown Fuse indicator circuit by LED Display. A Fuse be the equipment protects that use often most. Because of cheapness can use protect electronics Read more
Sine wave oscillator low frequency-constant amplitude
SEE! Simple Sine wave oscillator low frequency. Without thermistor and Incandescent lamp so very linear in transistor and zener diode circuit. Read more
Simple Telephone Ring Amplifier circuits
The telephone repeater circuit or The call signal peripheral circuit to the loud than the original,with a buzzer or a electric bell, to increase loud sound Read more
4 simple transistor tester circuits
This is the Transistor tester circuit into PCB. When your project do not works, the tester electronic parts or component be what need very much. Read more