Claims
- 1. An overvoltage protection circuit for directing a surge current on first and second telephone lines, each having respective input and output terminals, to a ground terminal when said surge current exceeds a predetermined level thereof comprising:
- a ground terminal;
- first and second telephone lines, each having respective input and output terminals;
- first and second diodes having respective anode and cathode terminals thereof, said first diode having said cathode terminal coupled to the input terminal of said first telephone line and said anode terminal connected to the output terminal of said first telephone line, said second diode having said anode terminal coupled to the input terminal of said second telephone line and said cathode terminal connected to the output terminal of said second telephone line; and
- first and second bilateral trigger devices respectively coupling the output terminals of said first and second telephone lines to said ground terminal.
- 2. The overvoltage protection circuit of claim 1 wherein said first and second bilateral trigger devices comprise SIDAC's.
- 3. An overvoltage protection circuit for directing a surge current on first and second telephone lines to a ground terminal when said surge current exceeds a predetermined level thereof comprising:
- a ground terminal;
- first and second telephone lines;
- a first diode having anode and cathode terminals, said anode terminal of said first diode coupled to said first telephone line;
- a second diode having anode and cathode terminals, said anode terminal of said second diode coupled to said second telephone line; and
- a TRIAC having first and second main terminals and a gate terminal, said first main terminal coupled to said cathode terminals of said first and second diodes, said second main terminal coupled to said ground terminal and said gate terminal for coupling to a reference voltage.
Parent Case Info
This application is a continuation, of application Ser. No. 573,531, filed 1-25-84 now abandoned.
US Referenced Citations (6)
Non-Patent Literature Citations (2)
Entry |
"Flasher for Pop Music or Motion-Stopping Strobe" by R. M. Fisher, Popular Electronics, Nov. 1972. |
Popular Electronics, Dec. 1969. |
Continuations (1)
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Number |
Date |
Country |
Parent |
573531 |
Jan 1984 |
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