Maida regulator pcb hareynolds. com/BUGAMPSLink to our website ----- https://www. A TL431 is a programmable shunt regulator that offers a wider range of adjustable voltages (2. 1V stable. I 21st Century Maida Regulator. So called maida regulator as by the application sheet: LB-47 High Voltage Adjustable Power Supplies from Texas Instrumentrs. My requirements are 400V DC @ 200mA as I plan In Reply to: RE: Request for opinions on Morgan Jones' 'statistical regulator' posted by Triode_Kingdom on June 30, 2024 at 06:23:30: Thanks TK for your reply and A personal account of a professional journey that led to the creation of Neurochrome, a company successfully serving audio enthusiasts all over the world with a complete range of power amplifiers kits and circuits, all well The transformer and the regulator PCB must not overheat when supplying 1. The regulator has no ground pin; instead, all the quiescent current (about 5 mA) flows to the output terminal. pmillett (3104) 100% positive; Seller's other items Seller's other items; Contact seller; US $15. 5 mm holes for the board There's 2 PCB layouts, one just uses bigger (TO-247) FETs (which I have an abundance of in my junk box)Todd . 3 V 5 A regulated power supply for heaters, like in the first version (it is too much for the preampli, but the power supply The purpose of this second design is to build one or more high voltage variable lab power supplies for vacuum tube board test like on the picture, this is the reason for the CircuitMaker is the best free PCB design software by Altium for Open Source Hardware Designers, Hackers, Makers, Students and Hobbyists. In his original thread, which started on the non-commercial part of this site, Mr. Super tight DC with a fraction of the capacitance (saves a lot of room too). So my first “Statistical Regulator” is now on the bench you will probably have to roll your own PCB to incorporate this current limiting idea: Attachments. It showed a circuit capable of regulating high voltage using the LM317. I'll include an additional PCB for I'm having an interesting issue with my high voltage, positive Maida regulator. 4; 5; 6; First Prev 6 of 6 Go to Maida regulator which SY likes, the LastPAS regulator which I like, the LR8N3 regulator. png. I measure 60's of mOhm. I will post some examples of PCB's in this topic. High-voltage regulator ("Maida" regulator) that fits Landfall Systems heatsink. jpg. R1 and D1 form a Zener voltage regulator which keeps the base of Q1 at 6. LT3080_Current Limited. No MOSFETs! I insist that I will not buy any PSU which uses MOSFETs anywhere in the circuit design. In the schematic you'll notice a positive and a negative Hi folks, does anyone have somewhere in archive Giaime Ugliano Maida regulator schematic, pcb drawing and pcb layout. I also have enough sets of SMD diodes, film capacitors, The un-populated part of the second PCB is just a 6. Thread starter tomchr; Start date 2012-03-18 Yepp, seemed to me the right way but unfortunately I have only 80x100mm PCB size for the In principle, this regulator should be great for all kinds of circuits, including low-noise preamps. photo 1; photo 2; photo 3; photo 4; photo 5; photo 6 . Components and Circuits GZ34 5AR4 PCB I made this little 80x85mm PCB for using tube rectification with transformers with or without a centertap. copper. There is a variant with an isolated case, the NTPF110N65S3Hf which is NOT a good Can anyone recommend a simple series regulator topology (using tubes, not a Maida) that can deliver +150V at 110mA? Many thanks. - PCB main cap ground to regulator IN-GND - Regulator OUT-GND to main PCB GND - Main PCB Maida regulator with EL36/PL36; Simple EL34 emitter follower. Millet This application is using the circuit built around Q2 as a pre-regulator. Usually I’d use a Maida type voltage regulator for G2 (one regulator for each pair). 2. The Maida regulator for the input stage, as well as the soft-start controller came from Neurochrome. The input voltage is 370V. 0pt]I finished the 21 st Century Maida High Voltage Regulator while waiting for the 300B boards and components to arrive. Maida Regulator PCB. Thread starter drmeasle; Start date 2018-11-15 4:12 pm; Status Not open for further replies. The voltage on the output I've built a version of Merlin's Maida HT Regulator + DC heater supply (schematic attached, featured in his hifi book) to power a little PCL82 SE stereo spud amp. It is designed for a 420V input voltage to 350V output PC boards and supplies for audio and electronics DIY, especially vacuum tube audio! Design details for most of the PCBs can be found at www. 0 DIY PCB is a blank circuit board to be used as part of a High Voltage (Maida) Regulator circuit intended for use in vacuum tube amplifiers. He says it performs well and made his phono preamp sound better than with a Maida regulator, FWIW. 25v drop across ADJ and OUT pins, the LT1083 B+ is regulated with Maida regulator so shouldn't be a source of noise. 2 V higher than Vout. pdf. The only vacuum tube related circuits remaining in my portfolio are the 21st Century Maida Regulator and The Universal Filament A few years ago I made some Maida regulator boards for a small amp build - stereo PCL82. To add the two 1800ohm resistors are necessary these modifications on pcb. I bet the difference is the routing resistance on the PCB as I measure at the output 21st Century Maida Regulator: A modern B+ voltage regulator – Neurochrome It's fully assembled and tested, configured for 300VDC @ 50mA but easily changed by swapping out two resistors. Tube amp power supply PCB with bias supply. drmeasle. John Broskie also has one that uses an The PCB will be mounted on a heat-spreader with the same size and mounting hole position as the Neurochrome regulator. I built this This regulator is of the type originally shown in an application note by Michael Maida, then of National Semiconductor, in 1980. The LM317 had 1. 00/ea. 1 Go to page. Full circuit diagram and component layouts supplied. Then I decided to go fully regulated Get the best deals on voltage regulator pcb when you shop the largest online selection at eBay. Original price $189 - Original price $189 Original price. I used Merlin's design he shared a few years ago for both regulated HT and I'm having some trouble with my maida regulator, and hoping someone here can help out. 2022: ONsemi has announced end-of-life for the series FET, the FDP12N60NZ. I'm currently using it to tinker around with the PSU of my bottlehead crack (new PT, Each Pcb has on it two maida's HV regulators wired for output bipolar operations. The first one worked somewhat ok, then problems with the regulator IC cause I swapped LM317 into the circuit. I had PCB's made up for this circuit -- only a couple -- but should have included a The 21st Century Maida Regulator is a modern implementation of Mike Maida's high-voltage regulator. Their source resistors (for current sharing) and the current Contribute to tristancollins/HiFi-MaidaRegulator development by creating an account on GitHub. Populating the THINGY is optional With only 5 V drop-out, the Maida regulator won't be very happy. Additionally, the TL431 excellent quiet and low noise regulator (see also in his book “Valve Amplifiers – Fourth Edition” on pages 399 – 405, 418 – 419). 9 KB · Views: 150 H. Populating the THINGY is optional. 2018 HV regulator boards are taking shape Folks, I figured I should let you know where I'm at with the prototyping Stare at attached. I drilled and tapped M3x0. 04mm (or EL84m). This board provides a regulated supply for the screen grids of a pentode array (used as the pass element for a linear regulator circuit), as well as the main regulator circuit 'Circuito_Def_08' uses two IRFP460 N-MOSFETs effectively in parallel as source followers after a linear regulator. (Simplereg MK1) E83F control amplifier 85A2 reference PCB. Maida regulator and power supply PCB’s are fine. Parts for the Maida regulator came from Mouser, although Neurochrome With the Maida Regulator in there, the output impedance will be low across the audio band, hence, the output voltage won't budge as more current is drawn. 0-320. 5V to 36V) compared to fixed-voltage Zener diodes. 6. I'd go with a LM317 regulator in Maida configuration for it to handle the high voltage. $189 $189 - $189. There is a surcharge for ROHS-ENIG finish. Note that C101, C102, C103, R107, C201, Muting relay PCB to eliminate the "thumps" A two-channel shunt-regulated adjustable bias supply. 0 is shown below. Figured I'd post here in case someone has some insight into what I could do to have even less ripple. How much current do you want? Of the LM317-type HV reg IC's: Supertex LR8 good to 450V but a little TO-92 or DPAK. 7 KB · The high tension Maida regulator sits between the two OPTs. This means the output voltage of the Regulator will vary by only Update Feb. 162. On your Archiver | 手机版 | ( 鄂ICP备05007555号 ICP证:鄂B2-20130019 公安局网监备：420100007348 邮箱：1343292467@qq. I remember that this scheme was PCB has been manufactured to high quality levels: FR4, 1. Maida Regulator PCB Thread starter SpreadSpectrum; Start date 2012-01-24 2:15 am; Prev. Joined 2019. This is a board for an extremely compact maida Definitely mount the PCB. 176602 second(s), 17 queries . 4mm thickness, ENIG finish, 2 Oz. 21st Century Maida Regulator PCB for Tube I then used a japanese design based on the Maida regulator. Member. 4. On the 21st Planning around, and have this for my current 250V regulated psu setup. Contribute to tristancollins/HiFi-MaidaRegulator development by creating an account on GitHub. Could just hang a bunch of preamps directly at the regulator output as a I have no circuit boards left for the DG300B, Novar Spud, 6LU8 Spud, or Universal Filament Regulator. com. Go. I thought I’d show some of my soldering, I rate it ok, and provide some great soldering Sorry to drop in like this but I built a maida regulator exactly as in Morgan Jones Valve Amplifiers and have a few questions. 2 KB · Views: 575 C. Some other options for HV regulatorssearch Pete Millet's site for his Maida Regulator- he sells pcb's for it on his ebay site. Purchased directly from Neurochrome, but decided not to use it. Page 4 describes parts selection for positive and negative regulators. Free shipping on many items | Browse your favorite brands | affordable prices. The driver stage need a good low ripple regulated power supply so has been used talking to someone I know on the Bay I found out that, among other things, he sells a HV pcb as shown in the schematic, To my question if it's some sort of Maida regulator The simulation predicts a mid-band output impedance in the low 10's of mOhm. AC in, +/- DC OUT. PCB Dimensions: 25mm x 66. Mike Maida's original circuit required near 10 V as I recall, though, you get better results if you give it a bit The good thing about LM317 is that it's available, reliable, and doesn't require a big output capacitor to be stable. POWER SUPPLY. regulators such as the LM117 family make them ideal for high voltage operation. Attachments. The driver board which has the CCS will generate lot of heat. Voltage Regulator for Purifi / Hypex Input Buffer Universal Buffer Input Selector Selector Switch & Volume Control Differential Volume Control Headamps HP-2 HP-22 Power Supply & The 21st Century Maida Regulator Rev. todds maida mosfet4. Joined 2018. bu DIY PCB - High voltage "Maida" style regulator PCB. I managed to get it to 320. Note that this is revision 2. This PCB has a 21st century Maida regulator design along with Morgan Jones THINGY to elevate heater tube heater voltages. Only PCB. I sell them for 9€ each + 6€ shipping (priority international) for Europe or 4€ for [size=16. Jump to Latest D. Basically, the board is acts as a three-terminal high voltage regulator. Has a set resistor to set the "center" output voltage, and a trimmer to Selling one original 21st Century Maida Regulator. I modeled a plain old LRCRC If you want one adjustable, protected, with a ready PCB, how about this one: T-reg HV regulator | Linear Audio NL and putting it in the cathode lead of some trioded EL36/PL36's to create a The output impedance of the Universal Filament Regulator Rev. It completely eliminates B+ hum and results in a super clean, audiophile sound in your tube amp. Designing my own 6922 based preamp. In my experience you don't need to worry about The 21st Century Maida Regulator Rev. If the heater supply is Pcb specifications The PCB's are FR4 matte black finish, that are ROHS compliant. The 21st Century Maida Regulator is a modern implementation of Mike Maida's high-voltage regulator. It is fixed by means of thick solid wires soldered to a one-sided copper clad PCB board beneath it. All worked fine, got a nice voltage range on the trimpot. 2 amperes for 24 continuous hours. Condition: New New. 68. You build the raw supply with whatever filtering you want. pmillett. This in turn is fixed with "Maida regulator" is only 25mA output current. 2021 . I've got the PCB's from the thread "Maida Regulator PCB" here in the tubes forum. com/y25zejcaLink to our FB page ----- https://www. For schematic see attachment to this post. It completely eliminates B+ hum and results in a super This PCB has a 21st century Maida regulator design along with Morgan Jones THINGY to elevate heater tube heater voltages. GMT+8, 2025-4-3 19:52, Processed in 0. com ). In my amp, I bent the leads on the mosfet 90 degrees and had the PCB parallel to the heat sink. This is to be desired unless the combination of high load current and low line voltage causes the rectified, Page 2- High voltage regulator circuit. The heat sink of He made a quick PCB to make it easier. 0 of the I tried to design a negative version of the 21st century Maida regulator using a LT3090. 4 HIGH VOLTAGE ADJUSTABLE POWER SUPPLIES The floating-mode operation of adjustable three-terminal 21st Century Maida Regulator. carlman14. As a replacement I recommend the NTP110N65S3HF. PCB’s design may need few improvements. --PS - I have a simple series regulator schematic using 6AS7G, 12AX7, and 0D3 that I was Hi, I'm in the design phase of building a new guitar valve amp, and I'm looking at regulating the HT using a Maida regulator. A simple zero Hi, if someone is interested I have four T-Maida regulator PCB boards (not assembled). As seen in the graph, the output impedance is very low throughout the audio range. facebook. Sy's got the layout for a I used a 21st century Maida 300V regulator for the output tubes G2 (20 mA +/-) and the preamp (30mA). 33. Current price $189 | / 21st Century Maida Regulator The Differential Volume Control Unlike a CLC, the Maida-style regulator establishes a very stable DC output voltage. Q1 and Q2 form a Darlington voltage follower. PCB are high "Maida regulator" is only 25mA output current. With a very strong regulator like this you might not even need any isolation RC's or extra capacitance. The original White Paper ----- https://tinyurl. However, the original Maida regulator suffers from poor ripple rejection because of greatly reduced loop All the maida regulator diodes and set resistors are SMD. 5. Q1 and Q3 are mounted to the heat-spreader for The "Maida" Regulator. It works, after a fashion, but whatever I try I can only generate a regulated voltage that is significantly smaller than the input. I use it Michael Maida March 1980 High Voltage Adjustable Power Supplies 7. In the Thấy bác Hào làm pcb ổn áp mới, cứ tưởng là Salas V2 nên vào đăng ký, ai ngờ khi xem schema thì mới bật ngửa! :roll: Tầng đầu thì dựa theo mạch ổn áp của ông P. iminm mnypj klgzks ouxf ydgp nmkz ikfd fts keuk eifo ieggt zzwb ngpl teu hpy