LM741 Voice Filter (CB25936E)

This 300 Hz to 3.4 kHz filter was found in the May 1989 Radio Electronics magazine. The circuit requires a symmetrical power supply.

| Clique na imagem para ampliar |

Bargraph Peak Detector LM3915 (CB14385E)
This circuit was obtained in the National Semiconductor Linear Applications Handbook of 1994. The...
SCR Variable power supply (CB8894E)
This circuit was found in a Hands-On Electronics. Some restrictions must be considered as the need...
Skin Temperature Monitor (CB10960E)
This circuit was found in a 1987 magazine. It measures the resistance of the skin using a...