| 摘要 |
<p>The protective circuit for a band saw cutter produces signals for automatic braking of the electric drive motor. A balancing circuit controls the driving and braking circuit and comprises a complex voltage divider with capacitive components. The circuit is loaded by an oscillator voltage and is connected via a first pulse former to the first input of a coincidence circuit. The second input is connected via a second pulse former with the oscillator voltage. Within the complex voltage divider, resistances are connected in parallel with the condensers. The two inputs of a sum-and-difference amplifier are connected to both parts of the voltage divider.</p> |
