This circuit is suggested by Texas Instruments in old documentation. The components depend on the desired characteristics for the circuit. The power supply must be symmetrical.
This circuit was published in a 1977 Radio Shack catalog. The PNP transistor may be BD135 and NPN...
May 2017 - ROHM is announcing the availability through Mouser Electronics of a broad line of fast...
This temperature compensated circuit was found in a Popular Electronics of the 1990s. The circuit...