The figure shows how to drive a load up to 300 mA with an LM3900. The transistor can be a BD136. We found this setting in the 1994 National Semiconductor Linear Applications Handbook.
This circuit can be used as a buzzer from 3 different locations, allowing you to identify where it went...
This amplifier provides 20 W of power on each channel, containing separate filters to power a...
This dual-LED circuit indicates three signal levels. It was found in the January 1996 issue of...