This circuit was obtained in a 1982 English magazine. The purpose of this circuit is to interface signals other than TTL circuits with TTL inputs. The transistor can be a BC548, 2N2222 or any equivalent.
We found this circuit in a 70's RCA manual. The circuit provides 0.5 W power in the 700 MHz to 1...
This circuit with TTL output was found in a 1968 EEE. The transistor can be of general use. The...
This circuit was found in a Popular Electronics from the 90s. The circuit uses a general purpose...