This resistance meter was found in an English documentation from 1989. The operational amplifier admits an equivalent and the transistor can be a BC558 or BC559.
This circuit inverts the signal of any logic using a general purpose PNP transistor. The supply...
This Industrial Track or overhead crane slows down when it detects more objects. The circuit has a...
This stage of IF to 455 kHz operates with voltages from 1.5 V. We find it in a 90s Popular...