Power tool/vacumm cleaner power control

Details Power tool/vacumm cleaner power control Power tool/vacumm cleaner power control

1988-05-03

1989-04-25

Salce, Patrick R.

Electricity: power supply or regulation systems

Output level responsive

Phase controlled switching using electronic tube or a three...

323300, 323320, 323908, G05F 1455

Patent

active

048251402

ABSTRACT:
A power controller having first and second power outlets, connections between one side of an A.C. line to one side of each outlet, a current sensing impedance connected between the other side of the A.C. line and the other side of the first power outlet, a triac connected between the other side of the A.C. line and the other side of the second power outlet, a first operational amplifier normally maintaining the triac in a non-conductive condition and a second operational amplifier to cause current to flow through the triac to the second power outlet after a selected time delay whenever an appliance such as a power tool that is coupled to the first power outlet draws a given amount of current through the sensing impedance.

REFERENCES:
patent: 3947751 (1976-03-01), Bray
patent: 4555741 (1985-11-01), Masaki
patent: 4697389 (1987-10-01), Romine
patent: 4716511 (1987-12-01), Masaki
patent: 4754579 (1988-07-01), Batt
patent: 4765099 (1988-08-01), Tanner

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