| 摘要 |
An analogue synchroniser of pulses releasing bridge thyristor converter consisting of forming elements, each equipped with a first transistor having between the emitter and collector inserted capacitor, however, transistor's emitter is connected to the first external source of supply voltage, and collector is connecter to collector of the second transistor, whose emitter through the first resistor is connected to the second external source of supply voltage and having three synchronisation windings, by one end connected to frame of the system, characterised in that the other end of each synchronisation winding (L) is connected respectively to inputs (WE) of forming elements (F1 - F3), and the input (WE) of each forming element (F1 - F3) through a low-pass filter (FT), preferably producing a phase shift of 30 degrees electrically for the frequency of 50 Hz, is connected to the base of the third transistor (T3) and to the emitter of the fourth transistor (T4) whose collector is connected to the base of the fifth transistor (T5), and collector of this transistor (T5) and the base of the fourth transistor (T4) and emitter of the third transistor (T3) are connected to the frame of the system, whereas collector of the third transistor (T3) is connected to input of the first inverter (I1) and also through the second resistor (R2) to the third external voltage supply (U3), with which through the third resistor (R3) are connected emitter of the fifth transistor (T5) and input of the second inverter (I2), whereas outputs of the first and second inverter (I1, I2) are connected respectively to outputs (WY1) and (WY2) of forming element (F1 - F3) and inputs of adder (S), whose output is connected...<IMAGE>
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