/Schematics/Telephone circuits/Phone line in use indicator
Very simple device with two LEDs as indicators.
Author (sent by): Aaron
Download counter: 1,063
Rating: 
(2.93, votes 1990)
Vote: 
Date: 14-02-2004
Lokalna verzija ove stranice: Indikacija zauzetosti telefonske linije
Tags: . +add your tag
380_indikacijazauzetostitel.linije.zip
similar content
- GSM phone ring detection (26-03-2007) [@Schematics/Everything else]
- Telephone line guardian v1 (20-02-2004) [@Schematics/Telephone circuits]
- Smart telephone light (20-02-2004) [@Schematics/Telephone circuits]
- Microphone amplifier with parabolic plate (22-02-2004) [@Schematics/Audio devices]
- Water tank level indicator with alarm (24-02-2004) [@Schematics/Everything else]
- Telephone hold with music (14-02-2004) [@Schematics/Telephone circuits]
- Megaphone at 9V (22-02-2004) [@Schematics/Audio devices]
- Battery charge indicator (23-02-2004) [@Schematics/Power supply]
- Phoneline controller v1 (20-12-2007) [@Projects]
- Cordless phone receiver v1 (14-02-2004) [@Schematics/Radio receivers]
add comment
Please log-in!
You can log-in on forum link: Login page. After logging-in, return to this page and click refresh in your browser.
