Using the M1575 this switching converter was found in National Semiconductor documentation from the 90s. The circuit has a maximum output current of 1 A.
This simple half-wave control using an SCR, which may be TIC106, has been obtained from a US...
I found this circuit in an English publication from 1989. This configuration can be mounted with...
This reader with TTL logic compatible output uses an LM139 comparator. The circuit was found in...