We found this circuit in the October 1978 issue of Radio Electronics magazine. The magazine article describes its assembly. The circuit is a 6-digit circuit using components from the time.
This circuit was found in an Elektor from the 90s. The circuit is critical, requiring a very...
This circuit using an operational amplifier was found in old American documentation. It can be...
The relationship of values between R1 and R2 determines the reference voltage for this circuit that...