This is a diagram of a 1970s reel or tape recorder. It is an Italian Geloso recorder, quite popular at the time. The circuit is a reference for equipment recovery.
This 100-second timer was found in a 2000 Poptronics. The magazine no longer exists, but the...
The 3-digit AD converter on this circuit is not very common today. It uses 2 integrated circuits to...
We found this circuit in the National Semiconductor FET manual. The components are calculated...