This circuit is from a March 1978 Radio Electronics magazine article that showed how to build it. The circuit is TTL based and is powered. The components used can still be found.
This circuit can be used in a single optical link or optical communication system and even using an...
This circuit was found in an old Motorola documentation from the 70s, as it uses one of its...
Found in a 90s 73 magazine, this circuit provides an output of 1.5 A with 24 V from a 12 V source....