| 摘要 |
FIELD: low-power temperature adjusters. ^ SUBSTANCE: device has heater, indicator and set-point device for temperature, amplifier, key, pulse generator and voltage transformer. Indicator and set-point device are connected to inputs of amplifier, to output of which key is connected. Voltage transformer has two transformers. First transformer has two additional windings, connected to output of key and to output of pulse generator. Winding of second transformer is connected to heater. Power buses of set-point device, amplifier, and key are connected in parallel to heater, and power buses of pulse generator and voltage transformer are connected to grid voltage rectifier. ^ EFFECT: higher reliability, higher durability. ^ 2 dwg |
