This circuit is from the 1990 Motorola Data Databook. The circuit can be implemented with equivalent transistors. The power supply must be symmetrical.
Based on the Linear Technology LTC2054, this -48 V circuit was found in a 2005 manual. The circuit is...
We found this circuit in an old Radio Electronics. The transistors can be the BC548. The circuit...
Maxim MAX16813B 4 Channel LED Driver These Maxim Integrated LED drivers are available from Mouser...