Current limiting solenoid driver

Details Current limiting solenoid driver Current limiting solenoid driver

H - Electricity

02

P

H02P 13/00 (2006.01) H03K 17/082 (2006.01) H03K 17/64 (2006.01)

Patent

CA 2110976

CURRENT LIMITING SOLENOID DRIVER ABSTRACT OF THE DISCLOSURE A solenoid driver (28, 114, 151) applies an actuation current to a solenoid (14) for a predetermined period and a lower holding current thereafter. A switching device (34, 116, 152) pulses the applied current within upper and lower limits to maintain the actuation and holding current amplitudes, the pulses being integrated by solenoid inductance into a substantially steady-state current. A multiprocessing unit (18) determines the amplitudes of solenoid current. A signal representative of desired current amplitudes is compared with a signal representative of measured solenoid current, and a signal representative of the difference therebetween is used to control the switching device (34, 116, 152). Voltage developed across a resistor (36) in series with the solenoid (14) is input to a differential amplifier (40) having connected to its output a peak detector (42) that mimics the decay rate of current in the solenoid (14), the signal representative of measured solenoid current being obtained from the peak detector (42). Power dissipation by the solenoid driver (28, 114, 151) is minimal, and the latter is capable of withstanding a continuous short to a source of electric current. The output of the peak detector (42) is monitored by the microprocessing unit (18) for the detection and logging of faults.

Affiliated with

Also associated with

Rating

Current limiting solenoid driver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Current limiting solenoid driver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current limiting solenoid driver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1483623