This circuit divides the frequency of a 2 kHz signal by 2. The circuit was found in Philips documentation from 1964. Modern transistors can be used for higher frequencies.
This power control circuit was found in an article in the June 1995 Electronis Now magazine. The...
This circuit for vehicular use is from an 80's American publication. The circuit has a light...
This circuit can be used with 3 receivers and is intended for low frequencies (medium wave range). We...