Current to voltage converter for grounded loads (CB9338E)

Found in an Electronic Design from the 90s, this circuit uses components from that time.

Basic Voltage Comparator C (CB25867E)
This circuit uses an LM339 and was found in the July 1995 Electronics Now magazine. The LED lights...
555 Car Alarm (CB3990E)
We found this circuit in an old Mullard (Philips) documentation on the 555 and 556 integrated circuit...
Photodiode Current to Voltage Converter (CB6104E)
This circuit was obtained from an 80's documentation from General Electric. The circuit uses an...