This circuit is from Motorola documentation, but can be implemented with virtually any phototransistor and any general-purpose transistor. The supply voltage can also be changed.
For those who like electronic music or special effects on their sound equipment, we have here an...
This circuit was found in an Elektor from the 90s. Next to the circuit we have a table with the...
This is the transmitter for a remote-control system published in the August 1986 issue of Radio...