This circuit is from a 1968 Texas Instruments documentation. The components are from the time and the sensor photodiode is difficult to obtain today. The circuit has a response from 10 Hz to 20 kHz.
This circuit was obtained in a Popular Electronics of the 90s. The circuit is compatible with...
This is a circuit that appears several times in this section and in articles. It is a preamplifier for...
Found in a Hands On Electronics of the 80s, this circuit makes use of an integrated circuit of the time...