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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.

 

If you have an audio application, you should stay with the original design of Mastech linear DC power supplies for fan-less operation.

 

For all other applications, we recommend the Volteq linear DC power supplies because of the improved robustness due to over-voltage and reverse-voltage protection.

 

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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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…

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…

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