Brushless VCR Motor?
Jake11611
Posts: 47
I recently took apart an old GoldStar VCR and took out the capstan motor. I know it's brushless because I can see the coils on the board. It connects using an 8 pin header. The problem is that I only know what a few pins (two, to be exact) do, I have no idea what the others do.The pins are labeled NC (I know that it's 'Not Connected'), S-G, Vctl, Vcc, 5V (+5 volts?), FG, F/R, and P-G. The IC that is controlling the thing is labeled 'LB1854' and all I know about it is that it's a brushless DC motor controller made by Sanyo. Can I control this motor with my BS2?
Post Edited (Jake11611) : 4/21/2006 7:12:05 PM GMT
Post Edited (Jake11611) : 4/21/2006 7:12:05 PM GMT
Comments
S-G is maybe Ground
5V is likely 5 volts.
P-G is likely Pause and go
and then you get into VCR specifics.
Vcc may be an output Voltage to support something else.
FG may have to do with Frames.
Vctl may adjust the speed to keep the motor in sync with the VCRs spinning record/read head.
Wiki for what is the inside of a VCR like and how it works.
It will pretty much give up an inventory of what the motor is expected to do.
Either it is done mechanically [noparse][[/noparse]and the gears wear out] or it is done electronically.
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"When all think alike, no one is thinking very much.' - Walter Lippmann (1889-1974)
······································································ Warm regards,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan
PAR
This makes my guesses quite dubious. I was assuming that it was a 3 - phase brushless motor {like the CD players} with with some sort of converter to 3 phase internally. They often have Hall effect senors too.
For the generics,
Unipolar steppers come with 5,6, and 8 wires.
Bipolar steppers come with 6 and 8 [noparse][[/noparse]maybe, never 5]
But, it looks like it at least has some diodes creating a switching logic.
What confounds me is the +5 and the Vcc as it implies a main power for the motor and a second supply for some sort of sensor or IC.
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"When all think alike, no one is thinking very much.' - Walter Lippmann (1889-1974)
······································································ Warm regards,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan
I copied the link and removed the ' and ) from start and end.
regards peter