Anonymous Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
EMS 250-20-2-D
EMS DC Power Supply 0-250V@ 0-20A Variable Regulated Digital
Actual item may vary if no part number is provided on quote request.
✔ 2 Year Warranty Included
✔ Free Domestic Ground Shipping
✔ NIST Calibration Available
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
TDK Lambda EMS 250-20-2-D Power Supply
The TDK Lambda EMS 250-20-2-D Power Supply has an input AC voltage that can rectify and filter to process a high unregulated DC voltage. The unregulated high DC voltage will be changed later by the inverter (A200 Bd.) in a square wave of high recurrence. This waveform may be stepped up or down by a high recurrence isolation transformer. The auxiliary output is rectified and filtered to produce the required low ripple output voltage. The output dims down and contrasts with a reference voltage, consequently regulating the output. Regulation is achieved through the modulation of the pulse width created toward the control phase (A100 Bd.)
The AC input enters through TB2 on the back of the unit. It passes through the power line filter on the A300 board. The purpose of the Power Line Filter is to attenuate high frequency conducted emanations produced inside the unit, thus reducing the high frequency current emitted onto the power source. The load side of the line filter connects to a DPDT switch, which permits power to pass through the rectifier span to supply the DC bus capacitors C1 and C2. During the turn on, the contact of K1 will be in the open position, restricting the inrush current through the rectifiers. Then, after a delay from 3 to 4 seconds, the contact shuts, permitting ordinary power exchange.
If you would like more details about the specifications and functions of this model, the user manual is available on the ApexWaves.com website.
| Model | EMS 250-20-2-D |
|---|---|
| Manufacturer | TDK Lambda |
| Series | EMS |
| Type | DC Power Supply |
| Maximum Voltage | 250 Volts |
| Maximum Current | 20 Amps |
| AC Input | 2 |
| EMS 250-20-2-D Manual | User Manual and Maintenance Manual Available for Download |
| Price | Contact a sales representative for a quote. |
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Eligible returns may be accepted within 30 days at Apex Waves’ discretion. A 25% restocking fee applies; non-refundable and built-to-order products are excluded.
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