Telephone Line Monitor (CB25983E)

This analog telephone line extension circuit monitors when the line is in use. We found it in the November 1996 Electronics Now magazine.

| Clique na imagem para ampliar |

Negative supply from positive source (CB8843E)
This configuration appears elsewhere on this site. We obtained it from a 90s Radio Electronics, based...
FCS 8100 Clock Module (CB24495E)
This circuit is from a Fairchild digital clock module shown in the March 1977 issue of Radio...
Transistor Amplifier (CB24221E)
This good power amplifier, a few tens of watts, is part of an article in the December 1972 Radio...