| 摘要 |
An improved control unit for an inverter, which control unit includes an R-C arrangement used as a synchronizable sawtooth voltage generator, a comparator having the sawtooth voltage as its inverting input and a control voltage as its non-inverting input with positive and negative feedback provided from the output to the input of the comparator thereby causing the comparator to act as an oscillator once the sawtooth voltage exceeds the control voltage thereby allowing long and short pulses developed to be changed into pulse trains or pulse series. The design is such that the feedback can be connected and disconnected and furthermore that a differentiating capacitor can be connected in or bypassed, thereby giving the control unit the capability of providing long pulses, short pulses, long trains of pulses or short trains of pulses. As a result, a mass produced control unit can be used with various types of equipment by connecting and disconnecting the proper soldered jumpers.
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