Linear DC Power Supply

 

Linear DC power supplies were the mainstay of power conversion until the late 1970’s. With the advancement of switching power supply technology, linear power supplies are less popular today but still find themselves indispensable in applications that require very low ripple and noise. A linear power supply uses a big transformer to drop voltage from AC line to much lower AC voltage, and then uses a series of rectifier circuitry and filtering process to produce a very clean DC voltage.  That low DC voltage is then regulated into the desired voltage level by a dropping the difference in voltage across transistor or IC (the shunt regulator). Typical applications of linear DC power supplies include but not limited to:

  • studio mixer/audio amplifier

  • low noise amplifiers

  • signal processing

  • data acquisition - including sensors, multiplexers, A/D converters, and sample & hold circuits.

  • automatic test equipment

  • laboratory test equipment

  • control circuits

  • anywhere that excellent regulation and/or low ripple is required

 

For three decades, Mastech has made variable regulated linear power supplies with exceptionally low ripple and noise, at a fractional cost of established brands. Our success has attracted a number of copycats with look-alike products. Over the last three years, we have adopted new designs that bring reliability and fault tolerance of a linear DC power supply to the next level. After three years of testing, we are happy to confirm that the new Volteq line of linear DC power supplies has met all of our expectations in terms of voltage and current regulation, noise, and reliability, and is the linear DC power supply of choice for most of our customers.

 

Need help finding the right product? Email us at support@mastechpowersupply or call us at 408-622-9851, or check out the products below or our Selection Guide.

 

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VOLTEQ REGULATED VARIABLE DC POWER SUPPLY HY5003D 50V 3A

VOLTEQ REGULATED VARIABLE DC POWER SUPPLY HY5003D 50V 3A

$220.00 $109.95

VOLTEQ HY5003D is a lab grade linear DC regulated power supply, an improved version of the HY5003D we carry for yea…

Regulated Linear DC POWER SUPPLY HY3005DX 30V 5A 1mA Resolution

Regulated Linear DC POWER SUPPLY HY3005DX 30V 5A 1mA Resolution

$240.00 $119.95

VOLTEQ HY3005DX is a lab grade DC regulated linear DC power supply; as an improved version of HY3005D, this power…

Improved! Regulated Linear DC POWER SUPPLY HY3006D 30V 6A Over-voltage Protection

Improved! Regulated Linear DC POWER SUPPLY HY3006D 30V 6A Over-voltage Protection

$220.00 $119.95

VOLTEQ HY3006D is a lab grade regulated linear DC power supply, an improved version of the HY3006D we carry for yea…

REGULATED VARIABLE DC POWER SUPPLY HY6003D 60V 3A New Model

REGULATED VARIABLE DC POWER SUPPLY HY6003D 60V 3A New Model

$240.00 $119.95

VOLTEQ HY6003D is a lab grade DC regulated linear power supply, an improved version of the HY6003D we carried for y…

Mastech Regulated Linear Variable DC Power Supply 18V 3A HY1803D

Mastech Regulated Linear Variable DC Power Supply 18V 3A HY1803D

$129.95

Please check out our new model with over-voltage protection. HY1803D is a lab grade regulated variable linear DC …

VOLTEQ REGULATED VARIABLE DC POWER SUPPLY HY5005D 50V 5A

VOLTEQ REGULATED VARIABLE DC POWER SUPPLY HY5005D 50V 5A

$260.00 $129.95

VOLTEQ HY5005D is a lab grade linear DC regulated power supply with up to 50V and up to 5A output. This highly stab…

Variable Linear Power Supply GPR-1810HD 0-18V 0-10A

Variable Linear Power Supply GPR-1810HD 0-18V 0-10A

$250.00 $169.95

VOLTEQ GPR-1810HD is a lab grade DC regulated linear power supply. This highly stable, high quality linear DC power…

Mastech Regulated Variable Linear DC POWER SUPPLY HY3003D 30V 3A

Mastech Regulated Variable Linear DC POWER SUPPLY HY3003D 30V 3A

$180.00 $179.95

Guaranteed the best price, fast shipping, and friendly service. Mastech HY3003D is a lab-grade regulated va…

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 $179.95

VOLTEQ GPC-3030D (and its equivalent model HY3003D-3) is a triple output variable regulated power supply. This line…

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 $179.95

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

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