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野外队修配车间，在修理汽车和柴油机过程中，需要蓄电池起动汽车发动机和柴油机。由于新修的汽车发动机和柴油机起动比较难，特别是冬天靠蓄电池起动更加困难。根据这一情况，我们利用了一台废的千伏安接触式调压器，改制一台12伏用的起动电源设备。较好地解决了上述困难。原理线路如附图所示，其中虚线框内为调压器改制的整流变压器。我们把3千伏安的调压器改为普通的双线圈的低电压大电流的整流变压器，如用于12伏起动马达，二次绕组电压为
The field team repair workshop needs batteries to start the car engine and diesel engine during the process of repairing automobiles and diesel engines. It is more difficult to start a newly-built automobile engine and diesel engine, and it is more difficult to start with a battery in winter. Based on this situation, we used a waste KV contact regulator to reform a 12-volt starting power supply. Better solve the above difficulties. The principle circuit is as shown in the figure, in which the dotted line frame is a rectifier transformer reformed. We changed the 3 kV regulator to a normal two-coil low-voltage, high-current rectifier transformer. For example, for a 12-volt starter motor, the secondary winding voltage is