We found this circuit in the Texas Instruments optoelectronics manual. Field effect transistors can be BF245 and bipolar BC548. The sensor is a photodiode in the photo-generator mode.
This circuit makes use of an uncommon integrated circuit. It can provide a power of 6 W when...
Found on Popular Electronics from the 1990s, this oscillator uses a general purpose transistor. The...
This circuit operates at a frequency of 80 KHz and modulation up to 60 kHz. The circuit is from...