Claims
- 1. A circuit for producing pulses of electrical current in alternating directions in response to successive switch actuations, comprising:
- first and second conductors adapted for connection to a source of alternating electric current;
- a first unidirectional current path comprising an npn transistor having its emitter connected to the anode of a first diode, the collector of said npn transistor and the cathode of said diode being connected to said first and second conductors respectively;
- a second unidirectional current path comprising a pnp transistor having its emitter connected to the cathode of a second diode, the collector of said pnp transistor and the anode of the second diode being connected to said first and second conductors respectively;
- a manually operable switch having first, second and third terminals and a movable element for electrically connecting the third terminal alternately to said first and second terminals;
- means electrically connecting the base electrode of said npn transistor to the first terminal of said switch;
- means electrically connecting the base electrode of said pnp transistor to the second terminal of said switch; and
- means including a capacitor connecting the third terminal of said switch to said first conductor.
- 2. The circuit of claim 1 wherein said means connecting the third terminal of said switch to said first conductor includes a resistor in series with the capacitor.
- 3. The circuit of claim 2 wherein the third terminal of said manually operable switch comprises one pole of a two pole switch, the other pole of which forms part of a dimming circuit for providing an output voltage signal having either a zero value if said switch is in a first state or a voltage variable between first and second predetermined limits if said switch is in a second state, the value of the variable voltage being controlled by a potentiometer in the dimming control circuit.
Parent Case Info
This application is a continuation of application Ser. No. 08/006,111 filed Jan. 15, 1993.
US Referenced Citations (20)
Non-Patent Literature Citations (3)
Entry |
Honeywell Product Brochure Form No. 63-2293-2 (Rev. 2-92) for "EL7305 Electronic Ballast Controller". |
Honeywell Product Brochure Form No. 63-2254-3 (Rev. 12-92) for "EL7315A Electronic Ballast Manual Dimmer". |
Honeywell Product Brochure Form No. 63-2415 (Rev. 12-91) for "EL7316A1009 Electronic Ballast Manual Dimmer". |
Continuations (1)
|
Number |
Date |
Country |
Parent |
06111 |
Jan 1993 |
|