This amplifier, from Philips Databook is suitable for automotive applications. The input resistance is 60k ohms and the frequency range is 20 to 20 kHz.
We obtained this circuit from an old European publication. It generates sinusoidal signals...
This circuit consists of a variation of a 4-input control, with the difference that we have only...
Photoelectric cells can be used as sensitive light sensors. However, the low voltage they generate...