OPAMP Help needed - Electronic Circuits Projects Diagrams Free

amdie · 20th March 2008, 04:52 PM

I am using a sharp GP2d12 IR sensor with a 4.8 V battery and trying to power a vibration motor. The motor requires a 80 mA current to start and has an operationg range of 2 -3.6 V. Unfortunately the sensor only supplies 5mA and ranges in voltage from .5-2.6 V. What OPAMP or other device can I use to get this motor to vibrate harder, the closer the object is to the sensor?

Roff · 20th March 2008, 09:22 PM

Rotary vibration motors have an eccentric weight attached to the shaft. The only parameter you can change is the frequency of vibration, not the intensity. Is that what you want?

IQBALSOUND · 20th March 2008, 11:47 PM

I think that any conventional Power amp basically of an OP-Amp (LF351 not sure check data sheet)and couple of transistors can help you out if not post complete detail may be i can reply helpful.

audioguru · 20th March 2008, 11:53 PM

Sure you can change the intensity of a vibrator.
Vibrators have a variable resistance in series which can increase the power to the motor enough to vibrate her socks off!
Then the frequency (the RPM of the motor) also increases.

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20th March 2008, 04:52 PM	(permalink)
amdie	OPAMP Help needed I am using a sharp GP2d12 IR sensor with a 4.8 V battery and trying to power a vibration motor. The motor requires a 80 mA current to start and has an operationg range of 2 -3.6 V. Unfortunately the sensor only supplies 5mA and ranges in voltage from .5-2.6 V. What OPAMP or other device can I use to get this motor to vibrate harder, the closer the object is to the sensor?

20th March 2008, 09:22 PM	(permalink)
Roff	Rotary vibration motors have an eccentric weight attached to the shaft. The only parameter you can change is the frequency of vibration, not the intensity. Is that what you want? __________________ Ron

20th March 2008, 11:47 PM	(permalink)
IQBALSOUND	*I think that any conventional Power amp basically of an OP-Amp (LF351 not sure check data sheet)and couple of transistors can help you out if not post complete detail may be i can reply helpful.* __________________ LINUX leads iqbalsound@yahoo.com 92-321-9207460

20th March 2008, 11:53 PM	(permalink)
audioguru	Sure you can change the intensity of a vibrator. Vibrators have a variable resistance in series which can increase the power to the motor enough to vibrate her socks off! Then the frequency (the RPM of the motor) also increases. __________________ Uncle $crooge