This circuit was found in a 1977 documentation. It limits the voltage from a source using zener diodes on the rectifier bridge. It is an unusual configuration today.
This low noise preamplifier has a gain of 19 dB in the 30 MHz band. The circuit is from the 80s....
The purpose of the strobe circuit in this sensor amplifier is to reduce consumption. The circuit is...
The amplifier gain shown in the figure is given by R1. The circuit is valid for other photodiodes and is...