This circuit was obtained from Linear Technology documentation from the 80's. Powered by 5 V it can be used as a shield. The components are from the era.
This circuit uses only passive components and the instrument can be a microammeter or the lowest...
This circuit turns on and off from pulses applied to the CLK input. The output 0 goes to the “’1"...
This circuit uses two transistors, the low noise BC549. Its quality is very good and it has a...