Simultaneous signal devices testing in response to periodic func

Details Simultaneous signal devices testing in response to periodic func Simultaneous signal devices testing in response to periodic func

1991-01-08

1991-11-05

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

Specific condition

315129, 340516, G08B 2100

Patent

active

050633740

ABSTRACT:
A test circuit for testing all lamps in a system monitor for a hot water heater. The comparator includes a amplifier having a reference input connected to a reference voltage and a second control input connected to power through a plurality of different circuit elements in a voltage coupling network. A timer is connected in the circuit to the control input to provide a timed drive signal to a power switch unit connected to the comparator amplifier for energizing all of the lamps. The timer is a simple resistor-capacitor network with the comparator connected to the signal control input. The signal branch circuit includes components selectively inserted to produce a test signal to the timer and comparator amplifier. A thermostat monitor is connected by a diode to the comparator amplifier and a demand for hot water creates a turn-on signal to the comparator for the period of the timer to energize all lamps for a short period at the initiation of the demand. A diode selectively connects the power line to the comparator amplifier and turns on all the lamps for the period of the timer. A direct manual control is connected to the power switch for manufal testing of the lamps.

REFERENCES:
patent: 3803544 (1974-04-01), Klein et al.
patent: 4150369 (1979-04-01), Gaspari et al.
patent: 4222031 (1980-09-01), Okamoto et al.
patent: 4447801 (1984-05-01), Masuda
patent: 4451822 (1984-05-01), Verse et al.
patent: 4644266 (1987-02-01), Reuter
patent: 4745339 (1988-05-01), Izawa et al.

Affiliated with

Also associated with

Rating

Simultaneous signal devices testing in response to periodic func does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Simultaneous signal devices testing in response to periodic func, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simultaneous signal devices testing in response to periodic func will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-500875