Balance and Audibility Amplifier (CB6037E)

This circuit is from an old Signetics documentation. It can be implemented with modern operational amplifiers. The power supply must be symmetrical.

| Clique na imagem para ampliar |

DC Motor Speed Regulator (CB19406E
) The integrated circuit used in this control is uncommon today and the maximum current obtained allows...
Inductance Meter (CB12449E)
The transistors in this circuit from a 1994 technical publication may be BC548 and the 12 V supply...
Light Level Meter (CB21049E)
Found in National Semiconductor documentation, this logarithmic meter is powered with a voltage of only...