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Applications
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.
Model No
TCR20S50-1
Condition
Used
Manufacturer
EMI
Current
50 A
Voltage
20 V
Power
1 kW
D
Digital Meters