HIFI 50W linear power supply LPS DC12V 2A update for DAC preamp headphone amp

  

We also can custom-make other voltage. Front panle: Default is silver. Polarity Internal + / outside - (default DC plug size 5.52.1mm) External dimensions Size145mm54mm210mm using full Aluminum chassis.

Front panel with voltage display. This is a very good liner PSU for update stereo headphone amplifiers, preamplifiers, DACs, network media players, and other applications requiring a single-rail regulated PSU. Output DC cable 5.52.1mm plug X 1 we also have can provide other size DC plug cable, such as 5.52.5mm or other.

Note: default is not include the input AC cable!! No IC (integrated circuits) are used. This allows complete design control over all operating points and parameters for superior performance. Low noise, high PSRR A constant-current source feeds a zener diode as a stable voltage reference. A low-pass filter (with a corner frequency of 1.6Hz) prevents zener noise from being introduced into the error amplifier. This is an effective yet lower-cost alternative to expensive voltage reference ICs. The low-pass filter also provides a soft-start characteristic. The output noise (unloaded) is less than 13µV at 24VDC output measured using a Tangent LNMP (low-noise measurement preamplifier) and a Fluke 187 50000-count DMM in ACmV mode. The output noise is even less when the output voltage is lower. This is much better than the noise of an IC regulator based PSU tested under identical conditions. The error amplifier is a discrete implementation of an opamp with a high open-loop gain of 102.5dB. The voltage supply to the error amplifier is isolated with capacitance multipliers to boost its PSRR (power supply rejection ratio).

This greatly improves the line regulation performance of the PSU. A long-tailed pair differential amplifier with current mirror and constant current source forms the first stage of the error amplifier. The second stage is the voltage amplification stage (VAS), also with constant current source load. The 3rd stage is comprised of the power MOSFET output devices configured as a source follower. High-current MOSFET pass transistors Two paralleled high-current, highly reliable MOSFETs serve as the "pass" transistor.

The use of paralleled MOSFETs divides the heat dissipation, simplifying thermal management. Onboard heatsinks can be used which would allow the 11 to supply up to 1A continuous (with much higher peak currents).

More sustained currents are possible by using larger, offboard heatsinks. The negative temperature coefficient of MOSFETs prevents damaging thermal-runaway conditions that may plague conventional BJT devices. Ukraine and some other remote countries will need some more days. (please see the detail describe)[In case of DOA (Dead on Arrival), please report within 3 days].

The item "HIFI 50W linear power supply LPS DC12V 2A update for DAC preamp headphone amp" is in sale since Saturday, April 7, 2018. This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Receivers & Amplifiers\Amplifiers & Preamps".

The seller is "along1986090" and is located in Guangzhou. This item can be shipped worldwide.

1. Compatible Brand: Universal
2. Type: Circuit board
3. Model: Universal
4. Country/Region of Manufacture: China
5. Brand: ZERO-ZONE
6. MPN: Does not apply
7. EAN: Does not apply