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 small receiver for the medium wave range was found in a Japanese documentation from 1961. The...
We can either supply this circuit with 12 V if we use a relay for this voltage as well as 6 V if...
This circuit is from an English publication of 1991. With it you can use a common multimeter on...