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.
The presented circuit is a sinusoidal oscillator for 1 kHz that makes use of the four amplifiers...
This headphone amplifier has good gain and high input impedance. The circuit is from Electronics Now and...
Based on the 4006 this circuit generates random signals in a frequency range that depends on L1...