Low Voltage Power Supplies
Series NTN from 6.5V to 350V / 35W to 100kW

The mains voltage is transformed to the appropriate level. On the secondary side of the transformer is a thyristor controlled rectifier stage (phase cutting circuit), the output of which is used to charge a capacitor bank.

This capacitor bank is also connected to the final series regulating transistor output stage.
By controlling the conduction angle of the thyristors after each zero-crossing of the sinusoidal voltage,
the flow of energy is regulated in such a way as to have a defined voltage drop across the final series transistor stage (pre-regulation).
The performance of the final series transistor stage defines the final stability of the output voltage (main regulation).

Features:

  • Simple construction
  • short circuit proof and unlimited operation with full current in short circuit condition
  • voltage and current regulation with automatic and sharp transition; control modes indicated by LEDs
  • voltage and current setting via 10-turn potentiometers with precision scale; the adjusting knob can be locked
  • 4½ digit DVM for voltage and current (for table-top models)
  • elapsed-hour meter as a standard on three-phase units


Series Vmin Vmax Amin Amax Pmin Pmax
NTN 6.5 V 350 V 500 mA 4 kA 35 W 100 kW

Downloade NTN data sheet



Series NYN from 12.5V to 350V / 7kW to 100kW

The mains voltage is first transformed to the appropriate level. On the secondary side of the transformer is a thyristor controlled rectifier stage (phase cutting circuit). The rectified voltage is smoothed by a LC-filter.

Features:

  • Simple construction
  • extremely robust
  • high efficiency
  • short circuit proof and unlimited operation with full current in short circuit condition
  • voltage and current regulation with automatic and sharp transition; control modes indicated by LEDs
  • suitable also for inductive and capacitive loads


Series Vmin Vmax Amin Amax Pmin Pmax
NYN 12.5 V 350 V 60 A 4 kA 7 kW 100 kW

Downloade NYN data sheet