Sigma11 Fully Discrete Regulated Power Supply (Single Rail 5-36VDC) KIT & Board

Description: Sigma11 Fully Discrete Regulated Power Supply (Single Rail 5-36VDC) KIT & Board All-discrete topologySingle-pass, series regulator design.No IC (integrated circuits) are used.Low noise, high PSRRA 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 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 transistorsThe high current rating provides a very high safety headroom against overcurrent damage.Onboard heatsinks can be used which would allow the σ11 to supply up to 0.3A continuous (with much higher peak currents-2A).More sustained currents are possible by using larger, offboard heatsinks-2AThe negative temperature coefficient of MOSFETs prevents damaging thermal-runaway conditions that may plague conventional BJT devices.Typical output voltages are 5V, 9V, 10V, 12V, 15V, 18V, 24V, 27V, 30V or 36V.If you need other voltages, please contact us.Do not short the output terminal to discharge capacitor, otherwise it will damage the power board.Product configurationDIY kit: Contains the PCB and the components needed on the PCB, but does not include the power transformer .Finished board: Based on the well-tested board on the standard version kit, we verified all key points' voltage, and used the signal generator and oscilloscope for analog waveform double verification. We will not use this board for listening test.All finished pcbs are all carefully hand-soldered and fully tests, so the price is higher and less cost performance. Price-sensitive consumers but with have DIY ability are recommended to choose the kit.SchematicPCB comes with component parameters for easy installation.We only refer the schematic of the amplification part of the circuit. If you need full circuit parameter, please read the component value with the PCB by yourself; we do not provide additionally.DIY KIT InstructionsSince the PCB holes are plated through, you only need to solder the parts from the bottom of the board. Do not drill or enlarge the holes because that would damage the through-plating.Clean both sides of the blank PCB with paper towel and isopropyl alcohol or electronics flux remover, then solder the components to the board, starting with the lowest profile parts. This means the resistors and zener diode. Then solder the small capacitors, small transistors, followed by the larger capacitors.Make sure the correct part goes into each position on the circuit board. Measure each resistor with your multimeter to ensure it's the proper value.Pay attention to the polarity of electrolytic capacitors, diodes, , transistors as well as the orientation.Clean up the solder flux residue from the board with isopropyl alcohol (or electronics flux remover) and a brush.Inspect all solder connections carefully, using a magnifying glass, to make sure there are no solder bridges or cold solder joints. Use a multimeter in ohms scale to check for short circuits.Typical ApplicationInput voltage VAC= (Output voltage +8)/1.414For example:12VDC-OUT,Input voltage VAC=（12+8)/1.414=14.14VAC, Please choose 15VAC；5VDC-OUT 9VAC-IN9VDC-OUT 12VAC-IN12VDC-OUT 15VAC-IN15VDC-OUT 18VAC-IN18VDC-OUT 18VAC-IN24VDC-OUT 22-24VAC-IN30VDC-OUT 26-28VAC-IN36VDC-OUT 32VAC-INParts listPicsDIY KITPicsFinished boardPayment Method: PayPal preferred Shippment: 1.We provide free shipping to international via China Post Airmail, and every parcel will be registered with tracking number. We can also ship by UPS/EMS/DHL/FedEx for alternative shipping method for corresponding fees. Please let us know before payment if you need split shipment. 2.International shipping requires complicated shipping procedures (such as both countries customs, transit stations etc.), also will be affected by many factors, such as holidays, weather conditions etc, If you have not received your shipment within 30 days from payment, please contact us. 3.Time of Delivery:Based on the China Post Airmail and our experience, kindly please be noted that To United States / United Kingdom / Australia, it takes around 10-15 business days; To Canada, it takes around 12-18 business days; To Brazil / South America, it takes around 25-35 business days. To Italy / France / Spain / Germany/ Eastern Europe, it takes aournd 15-20 business days. Returns & Replacements & Repair: We accept returns & replacements within 30 days from the day the customer receive the products, please make first contact within 30 days from receiving the order. Products should be returned in original condition. As a benefit to our customers, we also provide repair within 3 months from the day when this item is shipped out, after repair is done, we will send you the item, but the customer should pay both shipping ways. Feedback: 1)Your Feedback is really important to us, please take a few seconds to leave great feedback if you are satisfied with our product or service, thank you so much! 2)We always offer the lowest price for best goods and service to you. 3) Please contact us before leaving neutral(3 stars) or negative(1-2 stars) feedback.We will try our best to solve the problem and leave you a happy shopping mood here. Thank you!

Price: 19.19 USD

Location: Wuhan

End Time: 2024-09-25T08:32:16.000Z

Shipping Cost: 0 USD