100VA HIFI 2107 SUPER-PSU Ultra Low Noise Linear Power Supply 100W LPS

Description: Introduction: All-discrete topology, Single-pass, series regulator design. 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 requency 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 MAX 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 (rated at 17A each) serve as the "pass" transistor. The high current rating provides a very high safety headroom against overcurrent damage. The use of paralleled MOSFETs divides the heat dissipation, simplifying thermal management. Onboard heatsinks can be used which would allow the this PSU 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. No current-limiting. Parameter: Input voltage: AC 115V or 230V (Optional) Transformer power: 100W Transformer type: R-Core Weight: 4.5KG Power output GX16-2PIN polarity: "1+", "2-" DC plug polarity: "Internal +", "External-" DC plug size: 5.5*2.5mm (We also have other DC plug sizes, please contact us if you need to change other sizes) DC output voltage: We have the following output voltage options ● DC 5V ------- 6A ● DC 9V ------- 5.5A ● DC 12V ------- 5A ● DC 15V ------- 4.5A ● DC 18V ------- 4A ● DC 19V ------- 3.8A ● DC 24V ------- 3.2A Package includes: 2107 SUPER-PSU Ultra Low noise Linear power supply X1 1.2M GX16 to DC 5.5*2.5mm cable X1 NOTE: We do not provide AC input cables.

Price: 129.99 USD

Location: FOSHAN

End Time: 2023-09-13T09:45:02.000Z

Shipping Cost: 62 USD