Servo drive circuit with output of 150V and 50A
Source: InternetPublisher:jikai233 Keywords: Drive circuit BSP transformer Updated: 2021/05/18
Another example of power expansion is the 150V, 50A drive capability circuit shown in the figure
. The L292 output controls the external H-bridge circuit through two transformers . The voltage
ratio
of the transformers is 1:20. The two Zener diodes connected between pins 7 and 9
limit the duty cycle of the transformer (15"~85Yo). The LS141 operational amplifier
provides current feedback to L292. The two current sampling resistors are R.,, The relationship between the motor load current
and the 6-pin input voltage y. is
f-plastic alarm! ¨Here
, R. a, - Rz-12×lo-n. When the value of the ruler changes from 390 to 860fl ,
the transconductance I/V of this circuit is 3.0-8.6A/V.
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