This circuit with zener diodes was found in documentation from the 90s. The zener diodes determine the lighting point of the LEDs. The circuit is for 12 V automotive batteries.
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...