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Variable DC Power Supply

Huge savings for variable voltage bench power supplies, fast shipping, and friendly service. 

 

Mastech has three decades of design and manufacturing know-how in variable voltage regulated DC power supplies. We offer a large selection of variable voltage and current regulated DC Power Supplies, which are also called bench power supplies, Lab Power Supplies, DC variable power supply, regulated DC power supplies, adjustable DC power supplies, AC to DC power supplies, CC CV power supplies, etc.. Mastech DC power supplies are known for their best-in-class noise and ripple performance. 

 

We are located in the heart of Silicon Valley, and offer same day delivery to select south bay cities.

 

Need help finding the right product? Email us at support@mastechpowersupply or call us at 408-622-9851.

 

There are two main designs for variable regulated DC power supplies: Linear DC Power Supply and Switching DC Power Supply. Linear DC power supplies have exceptionally low ripple but tend to be heavy and less efficient, while switching DC power supplies have very high power efficency, and good noise and ripple performance for most of applications. Currently we only make linear DC power supplies with output below 20A. Typical applications for linear DC power supplies include studio mixer/audio amplifiers, lower noise amplifiers, etc.; typical applications for switching DC power supplies include industrial and scientific research, product manufacturing and testing, electroplating, electroforming, DC motors, aviation and marine applications, etc., check here for comparison of switching and linear DC power supplies.

 

You can also choose a DC power supply based on maximum voltage output, which ranges from 15V, 18V30V, 50V, 75V, 100V, 200V, to 300V ; or by maximum current output, which ranges from 3A, 5A, 6A10A, 20A, 30A, 50A, 100A, 200A, 500A, to 1000A.

 

You can also choose the power supply by selecting one of the categories below:

 

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Regulated Switching DC Power Supply HY1520EX 15V 20A

Regulated Switching DC Power Supply HY1520EX 15V 20A

$260.00 $139.95

VOLTEQ HY1520EX is a high current regulated switching DC power supply with built-in over-voltage and over-current p…

30V 10A Regulated Switching DC Power Supply HY3010EX Over Voltage Protection

30V 10A Regulated Switching DC Power Supply HY3010EX Over Voltage Protection

$300.00 $149.95

VOLTEQ HY3010EX is the updated version of HY3010E with built-in over-voltage and reverse-voltage protection, ideal fo…

Programmable Regulated DC Power Supply 30V 5A HY3005P with Output Switch

Programmable Regulated DC Power Supply 30V 5A HY3005P with Output Switch

$300.00 $149.95

For sale is a nice lab grade regulated programmable DC power supply from Quakko, Model number HY3005P. The output o…

Mastech LINEAR DC POWER SUPPLY 30V 3A HY3003F-3 TRIPLE OUTPUTS

Mastech LINEAR DC POWER SUPPLY 30V 3A HY3003F-3 TRIPLE OUTPUTS

$300.00 $169.95

HY3003F-3 is a triple output DC regulated power supply from Mastech. This high quality linear power supply has thre…

Mastech VARIABLE DC POWER SUPPLY 30 V 3A HY3003D-3 TRIPLE OUTPUTS

Mastech VARIABLE DC POWER SUPPLY 30 V 3A HY3003D-3 TRIPLE OUTPUTS

$300.00 $169.95

Note: this product is temporarily out of stock, please check our new model Volteq HY3003D-3. Mastech HY3003…

Mastech Variable Linear Power Supply 30V 10A HY3010D

Mastech Variable Linear Power Supply 30V 10A HY3010D

$350.00 $169.95

Note: this product is temporarily out of stock, please check our new model Volteq HY3010D. Mastech Variable…

VARIABLE LINEAR DC POWER SUPPLY GPC-3030D TRIPLE OUTPUTS 30 V 3A

VARIABLE LINEAR DC POWER SUPPLY GPC-3030D TRIPLE OUTPUTS 30 V 3A

$300.00 $169.95

VOLTEQ GPC-3030D is a triple output variable regulated power supply. This linear power supply has three outputs: tw…

REGULATED VARIABLE LINEAR DC POWER SUPPLY HY3010D 30V 10A New Model

REGULATED VARIABLE LINEAR DC POWER SUPPLY HY3010D 30V 10A New Model

$350.00 $169.95

VOLTEQ HY3010D is a lab grade DC regulated linear power supply, an improved version of the HY3010D we carry for yea…

New Model! VOLTEQ VARIABLE DC POWER SUPPLY HY3003D-3 TRIPLE OUTPUTS 30 V 3A

New Model! VOLTEQ VARIABLE DC POWER SUPPLY HY3003D-3 TRIPLE OUTPUTS 30 V 3A

$300.00 $169.95

VOLTEQ HY3003D-3 is the newest update to our triple output variable regulated DC power supply. This linear power su…

Programmable DC Power Supply HY3010EP 0-30V 0-10A With Arduino Nano

Programmable DC Power Supply HY3010EP 0-30V 0-10A With Arduino Nano

$360.00 $179.95

Volteq HY3030EP is basically the same as HY3010EX, except that it comes with built-in control and programmin…

Regulated Variable Switching DC Power Supply HY1530EX 0-15V 0-30A

Regulated Variable Switching DC Power Supply HY1530EX 0-15V 0-30A

$419.95 $189.95

VOLTEQ HY1530EX is a high current regulated switching DC power supply with built-in over-voltage and over-current p…

Mastech LINEAR DC POWER SUPPLY 30V 5A HY3005F-3 TRIPLE OUTPUTS

Mastech LINEAR DC POWER SUPPLY 30V 5A HY3005F-3 TRIPLE OUTPUTS

$400.00 $199.95

This model is temporarily out of stock, please check out our equivalent model HY3005D-3. Mastech Power Supply …

Mastech BENCH DC POWER SUPPLY 30V 5A HY3005D-3 TRIPLE OUTPUTS

Mastech BENCH DC POWER SUPPLY 30V 5A HY3005D-3 TRIPLE OUTPUTS

$400.00 $199.95

This model is temporarily out of stock, please check out our equivalent model HY3005D-3. MASTECH HY3005D-3 is …

New Model! 30 V 5A Triple Linear Variable DC POWER SUPPLY HY3005D-3

New Model! 30 V 5A Triple Linear Variable DC POWER SUPPLY HY3005D-3

$400.00 $199.95

VOLTEQ HY3005D-3 is the newest update to our triple output variable regulated power supply. This linear power suppl…

MASTECH VARIABLE REGULATED SWITCHING DC POWER SUPPLY 30V 20A HY3020E 600W

MASTECH VARIABLE REGULATED SWITCHING DC POWER SUPPLY 30V 20A HY3020E 600W

$400.00 $209.95

Note: this product is temporarily out of stock, please check our new and improved model Volteq HY3020EX. Got a…

VARIABLE REGULATED SWITCHING DC POWER SUPPLY 50V 5A HY5005-2 DUAL OUTPUTS

VARIABLE REGULATED SWITCHING DC POWER SUPPLY 50V 5A HY5005-2 DUAL OUTPUTS

$349.00 $209.95

This model is discontinued, please check out our single output model HY5005D or HY5020EX (0-50V, 0-20A). MASTECH …

Regulated Variable Switching DC Power Supply HY3020EX 0-30V 0-20A

Regulated Variable Switching DC Power Supply HY3020EX 0-30V 0-20A

$400.00 $219.95

  VOLTEQ HY3020EX is a high current, high voltage regulated switching DC power supply, and is similar to …

Regulated Variable DC Power Supply HY3020EX 0-30V 0-20A for Anodizing, Plating

Regulated Variable DC Power Supply HY3020EX 0-30V 0-20A for Anodizing, Plating

$400.00 $219.95

VOLTEQ HY3020EX is a high current, high voltage regulated switching DC power supply, and is similar to HY3020E bu…

Regulated Varaible Switching DC Power Supply HY3020EX 30V 20A Battery Charging and Equalizing

Regulated Varaible Switching DC Power Supply HY3020EX 30V 20A Battery Charging and Equalizing

$400.00 $219.95

  VOLTEQ HY3020EX is a high current, high voltage regulated switching DC power supply, and is similar to HY3…

MASTECH LINEAR POWER SUPPLY 50V 5A HY5005D-2 DUAL OUTPUTS

MASTECH LINEAR POWER SUPPLY 50V 5A HY5005D-2 DUAL OUTPUTS

$450.00 $259.95

This model is discontinued, please check out our new model HY5005D.  Mastech DC Power Supply HY5005D-2 is la…

Mastech Linear DC Power Supply HY3020D High Current

Mastech Linear DC Power Supply HY3020D High Current

$450.00 $259.95

Note: this product is temporarily out of stock, please check our new model Volteq HY3020D. Mastech HY3020D is …

VARIABLE SWITCHING DC POWER SUPPLY 30V 30A HY3030E 900W HIGH CURRENT

VARIABLE SWITCHING DC POWER SUPPLY 30V 30A HY3030E 900W HIGH CURRENT

$600.00 $259.95

  Got a question? Call us at 408-622-9851. Please check out our new model HY3030EX with over-voltage protect…

VARIABLE SWITCHING DC POWER SUPPLY 50V 20A HY5020E 1000W

VARIABLE SWITCHING DC POWER SUPPLY 50V 20A HY5020E 1000W

$550.00 $259.95

Note: if you plan to use this for battery charging or electrochemical applications like plating and eletrolysis, pl…

Regulated Linear DC POWER SUPPLY HY3020D 0-30V 0-20A New Model

Regulated Linear DC POWER SUPPLY HY3020D 0-30V 0-20A New Model

$450.00 $259.95

VOLTEQ HY3020D is a lab grade regulated linear DC power supply, an improved version of the HY3020D we carry for yea…

VARIABLE SWITCHING DC POWER SUPPLY 30V 10A HY3010E-3 TRIPLE OUTPUTS

VARIABLE SWITCHING DC POWER SUPPLY 30V 10A HY3010E-3 TRIPLE OUTPUTS

$550.00 $269.95

This model is discontined, please check out our new model HY3010EX, which has over-voltage protection, or our open so…

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