We found this precision circuit in a manual from the 80's. The operational amplifier is of a common type at the time, and equivalents can be tested. Transistors are general purpose types.
3KSMC21AH 3000W Transient Suppressor from Taiwan semiconductor Taiwan Semiconductor is making...
This amplifier, found in a 1980s documentation, should be powered by a symmetrical source. Modern...
June 2016 - can already be obtained from the Mouser the Texas Instruments DRV10964 along with...