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Motorelektronik / Electronic motor / Electronique du moteur
Function description
the operational amplifier in the clocking of the generator fre-
quency. This causes steep flanked pulses to rise at pin 7 which
are differentiated with R 9009, C 9010 and R 9001 and routed
through transistor T 9004 for a short period, This also causes the
capacitor C 9011 to discharge. The resistors
H 9014 and R 9019
determine
the
speed
at which
C 9001
is charged
whereby
the speeds with their relevant pitch ranges can be selected. A
sawtooth
voltage
is then routed to pin 2 of IC 9001 which
is
compared to the medium voltage formed by H 9020 and R 9029.
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