Master/slave circuit employing triacs

Details Master/slave circuit employing triacs Master/slave circuit employing triacs

1989-09-26

1992-03-24

Zazworsky, John

Electrical transmission or interconnection systems

With nonswitching means responsive to external nonelectrical...

Temperature responsive

307 12, 307 38, 307155, 307328, H03K 17725

Patent

active

050991574

ABSTRACT:
The master/slave circuit has a power supply with two conductors. One conductor is connected to one side of both a master outlet and a slave outlet. The other conductor is connected to the main terminal 1 (MR1) of the Triacs Q1, Q2 respectively associated with the receptacles. The other side of the master receptacle is connected to the main terminal 2 of the associated Triac Q1, and to the gate of Q1, through a resistor and to the gate of Q2 through a second resistor. The other side of the slave outlet is connected to MT2 of Q2. When a tool or device plugged into the master outlet is switched on and off a device plugged into the slave will turn on and off with the master and will have the same character (speed control, Soft Start, etc.). An optional switch between the slave outlet and the second resistor connected to the gate of Q2 allows operation of the device plugged into the slave outlet without operating the master.

REFERENCES:
patent: 3517217 (1970-06-01), Sleater et al.
patent: 3566198 (1971-02-01), Delahunty
patent: 3603817 (1971-09-01), Casson
patent: 3740585 (1973-06-01), Squiers
patent: 3781604 (1973-12-01), Scarpino

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