20 MHz filter (CB6735E)

This 20 MHz bandwidth circuit was suggested by the National Semiconductor in 1970 documentation. Modern equivalent operational can be used.

| Clique na imagem para ampliar |

Pulse Generator for Thyristors (CB13802E)
This circuit generates pulses to trigger power controls with SCRs and Triacs. We found it in a...
Battery status indicator (CB9553E)
This simple indicator was found in a 1980s American documentation. The circuit uses an operating system...
Bargraph PCF1303 (CB14719E)
The integrated circuit used is uncommon today. The circuit was obtained in the Philips integrated...