This low-noise, low-drift amplifier was found in a 90's EDN. It can be implemented with modern equivalent operational amplifiers. The font must be symmetrical.
This old circuit for circuit breaker cars was found in a 1963 publication. The transistors are...
Several circuits similar to this one can be found on our website. This is from an internet...
The circuit of the figure can provide voltages of 5, 8.9 and 12.5 V at its output, all doing this...