The selected circuit is from the Texas Instruments optoelectronics manual. With it you can receive optical signals in CW. Transistors support equivalents.
Tone controls for audio applications can also be considered filters that must attenuate certain...
The coils of this simple mid-wave radius are wound 28 or 26 on a 12 to 30 cm long ferrite rod and the...
This monostable circuit uses one of the two flip-flops available on the CMOS 4098 integrated...