This is the receiver for the previous transmitter. The signal consists of digital pulses with a compatible TTL or CMOS output. The integrated circuit is a 4093 and a photodiode of any type.
This effects circuit can be used with microphones or guitars. The circuit is from an American...
This circuit generates pulses whose frequency depends on C1. The circuit can be powered by...
I found this circuit in a 1998 publication, but as all components are common, it can be easily...