This circuit that has a response from 10 Hz to 700 kHz was found in Philips documentation from 1968. Dual transistors can be replaced by matched pairs.
This circuit is suggested by Motorola in its 1990 Linear Databook. The speaker (or headphone is 32...
This circuit was found in a William Sheets. It has 75 ohms of output impedance and can operate up to 20...
This follower, found in a 1982 documentation, has only one amplification step, but it helps in the...