Motor-driving circuit and wire-bonding apparatus

Details Motor-driving circuit and wire-bonding apparatus Motor-driving circuit and wire-bonding apparatus

1990-03-27

1992-01-14

Heinrich, Samuel M.

Metal fusion bonding

With means to juxtapose and bond plural workpieces

Wire lead bonder

228 8, B23K 2000, H05K 1306

Patent

active

050802763

ABSTRACT:
A motor-driving circuit is used for driving a motor which is of a type including a rotor whose rotating shaft has a permanent magnet used for generating magnetic fluxes, and an armature having three-phase windings wound around an iron core to form Y-connection windings. The motor-driving circuit includes a circuit for short-circuiting two of the three leads extending from the Y-connection windings, a rotational position detector for detecting a rotational position of the motor, and a control circuit for causing an exciting an exciting current to flow between the short-circuited leads and the remaining lead, in such a manner that the rotational position detected by the rotational position-detecting means is moved to a designated rotational position which is external input and is within a narrow angular range.

REFERENCES:
patent: 3937974 (1976-02-01), Lafuze
patent: 4340166 (1982-07-01), Bilane et al.
patent: 4364111 (1982-12-01), Jocz
patent: 4510422 (1985-04-01), Ogura
patent: 4565957 (1986-01-01), Gary et al.
patent: 4743825 (1988-05-01), Nashiki
patent: 4757241 (1988-07-01), Young

Affiliated with

Also associated with

Rating

Motor-driving circuit and wire-bonding apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor-driving circuit and wire-bonding apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor-driving circuit and wire-bonding apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-535600