Sell Test Equipment

TCR20S50-1 EMI DC Power Supply

The TCR20S50-1 is a 1 kW, 20 V, 50 A dc power supply from EMI. Supplies DC Voltage and Current to test, design, and troubleshoot electric and electronic circuits. Applications include Burn In, QA, ATE, Research, Design, and Education to name a few.

Additional Features:

  • Voltage: 20 V
  • Current: 50 A
  • Power: 1000 W
  • Single-Phase
  • Combine optimum performance and reliability
  • Highest power-per-cubic-inch in industry
  • Reduction in line-conducted RFI by 1000 times over previous SCR models. (Complies with VDE 875 Level N and VDE 871 Level A.)
  • High dielectric withstand ratings primary to secondary and chassis (2500 V rms)
  • Low output ripple and high operating efficiency
  • Input, output and programming terminals covered for operator protection
  • Series or parallel master/ slave operation
  • Common programming with E/M's three-phase TCR models and its EMHP and HCA Series


  • Semiconductor aging racks
  • CW lasers
  • General industrial DC power
  • Capacitor forming
  • Focusing coils for accelerators
  • Cryogenic magnet applications
  • Electroplating
  • Battery charging
  • ARC lamp power supplies
  • DC motor drive supplies

The EMI TCR20S50-1 is a 1 kW, 20 V, 50 A, single-phase DC Power Supply with low output ripple and high operating efficiency.

In an SCA phase-controlled DC Power Supply, output is controlled by modulating the conduction angle of the controlling SCRs. In the TCR Series, input AC is applied to three pair of bi-directionally connected SCRs placed within the delta connected primary of the main power transformer. The secondary voltage of this transformer is rectified and double UC filtered to provide a low ripple DC output. Both output voltage and current are sensed and compared against internal references or externally applied control levels so the supply provides either constant voltage or constant current regulation with automatic crossover depending on control level. Additional circuitry provides bias levels, circuit protection and metering functions.

ValueTronics New and Used Test Equipment, All Rights Reserved