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  1. Preamp Power Transformer Replacement ?
  2. Transformer Sizing
  3. Must we really use X2 capacitors?
  4. Does the signal current loop around an amplifying device include any local decoupling
  5. Question regarding DC stepup
  6. Power Supply for TDA7293
  7. How much does reducing power reduce the conducted EMC scan plot?
  8. Repair help sought for 60V @ 50 Amp linear supply
  9. power supply switching
  10. Additional diode after bridge rectifier?
  11. Covert a Dual rail psu into 2 positive rails, possible?
  12. PSUD2 Gurus, I need help...
  13. old voltage stabilizer as possible isolation tranformer
  14. Voltage doublers, with rigour
  15. screened twisted pair for power
  16. Transformer out of Fisher soundstage RS-909
  17. Wall wart supply for cmoy
  18. TO247 dual diode with common anode
  19. Switching 12V power supply
  20. HK Torroidal transformers
  21. Nos Rubycon noise filter
  22. PSU Testing in circuit
  23. Sagging Positive Rail Help.
  24. Please help on TL431 schematic
  25. PSU suggestion for LM1875T based chip amp.
  26. Active bridges - what next?
  27. 5v 1A linear regulator possibly uses pwm??
  28. 0V, GND schemes
  29. power cables for balanced ac
  30. Studio Grade PSU help pls
  31. 36V DC TO 24VDC?
  32. 25-0-25 Transformer For Independent Rails
  33. Power Plants and Ideal AC
  34. 5v to -+15v boost converter recommendations?
  35. SMPS question RE: Chinese 12V 8A supply
  36. Sorting a simple PSU circuit & winding
  37. Bypass capacitor theory
  38. Zener thermal drift
  39. Diode voltage drop question
  40. toroidal transformer mounting, insulated?
  41. What Size Main Power Supply Capacitors...
  42. SMPS with 3 independent outputs
  43. Easy-peasy constant-current supply module for PCC88 tube filaments?
  44. Adding adjustable over current protection to large server SMPS units?
  45. 115/230vac selector switch
  46. 3S/6S Lithium Battery Pack
  47. Mains filter: John Risch
  48. Faraday Cage needed ?
  49. proper ferrite bead usage
  50. Positive sensing zero-crossing detector.
  51. wiring question
  52. Voltage doubler options - please review
  53. Snubbing a relay coil
  54. Using existing 18vdc output from amp without polluting supply?
  55. Spec'ing current reqs on trafo secondaries
  56. Another Shot at dual Voltage PSU
  57. what's the job?
  58. SMPS for a class A Jean Hiraga 30w
  59. Power Supply math problem.
  60. Will LM317 maintain max voltage if input is lower than required
  61. Mains power: how to recreate a phase?
  62. Salas 5v for WaveIO
  63. Different ways to wind a transformer centre tap?
  64. Salas Reflektor vs SSLV
  65. Boston ac. Hps 10ho panel no power supply
  66. Repair sub power supply circuit - ADAM A7X
  67. Need help!
  68. 12v DC trigger on/off
  69. PCB layout in shunt regs
  70. most efficient low noise load regulator when you don't want line regulation?
  71. Strange Forest of Noise with Linear PSU
  72. I miss the ground
  73. DC-DC converter based PSU for line level applications
  74. LM3886 power supllies
  75. dc converter too hot
  76. Solar Power Upgrade
  77. PSU Question
  78. Repair of Mean Well RSP 2400-24
  79. Relay cut-off / mute
  80. Simple Math: Errors in The Radiotron, 4th ed. (?)
  81. SMPS Power inductors & Flux fringing
  82. Really interesting behavior with BOOST DC-DC converter
  83. not using a secondary on toroidal
  84. Single rail power from dual rail SMPS
  85. Proper grounding scheme
  86. 50V rated capacitors with a 29VAC transformer OK?
  87. Help, for problems in 12VDC Linear PSU.
  88. newbie PSU building thread
  89. Flat pack transformer experience: a lot of EMI and buzz
  90. Circuit for charging capacitors/batteries in parallel?
  91. Charging 10x AA NIMH's in series with no balancing?
  92. LT8331 -- Single chip high voltage dc-dc converter
  93. OP AMP input error (LM7121)
  94. LL 1662 Lundahl mains isolation transformer
  95. 250 to 300 volt regulated 300ma linear supply
  96. Two ways to make 12.6v, which is preferred?
  97. Test circuit for regulating charge to capacitor
  98. 2016-10 200mAh NICD -0.3v?
  99. PSU
  100. Battery box with voltmeter does not work
  101. APERO : Voltage regulator based on an idea of G. PERROT
  102. Transformer hum
  103. PSUD usage questions
  104. Damped LC filter for low pass (1500Hz) filtering
  105. regulator puzzle
  106. help for a beginner?
  107. How to calculate transformer secondary resistance ?
  108. Capacitor long term overvoltage
  109. switch mode power supply for good amplifiers
  110. the new Linear Technology - LTM4643 nice
  111. Advice on scavenged Nakamichi AV-10 power supply, please.
  112. Mains power to usb charging without a wall wart(UK)..?
  113. Toroid or EI ? Pros and cons plz...
  114. 220V to 110V Stepdown Transformer. Can it be reversed ?
  115. How to wire transformer
  116. Toroidal 50hz buzz after short?
  117. PSU voltage sag vs nominal current
  118. Reverse-engineering + fix of a wireless charger
  119. Please criticize my PSUD simulation
  120. A "filterless" supply
  121. Opinion on ground loop
  122. Where I can start..?
  123. I found some nice heatsinks for discrete diode bridges
  124. SMPS300RS 24v Behaving Strangely
  125. Help Me Choose a Transformer (PLZ!)
  126. GOSS Band?
  127. LM317/337 dual supply
  128. unusual bridge rectifier
  129. LT3042 universal PSU PCB
  130. AP24D4 relay replacement
  131. Why Schottkty's?
  132. 12v wall wart + 12v DC to AC power inverter = NOT overunity?
  133. How do you design power supplies?
  134. SSHV2 vs. 21 century Madia Rev. 2
  135. Kirchhoff’s Law repealed!! {PSUD}
  136. Hypex Smps 400/180 vs Connex Smps 300Re
  137. Power supply - Millett Tube Mic Preamp
  138. Power transformer question
  139. Power Supply for "Engineer's Amplifier"
  140. Power supply filtering confusion
  141. Instek GPD-3303s Power Supply
  142. Linear PS upgrade VS. Walwart... SONIC improvements???
  143. Crazy Audio high voltage shunt regulator
  144. Opinions on ebay PSU design
  145. Technical question about Audiophonics Linear power supply
  146. Is PSU power rating the whole story?
  147. Amplifier Board for 400 watt 2x48v Transformer
  148. Capacitor value?
  149. PS Choke in ground leg
  150. 24v 5A rechargeable battery system
  151. How much capacitance is really enoughi
  152. Question about a power supply
  153. computer power supply
  154. What's the secret behind BATTEROO?
  155. a quick question about LLC SMPS
  156. Fets
  157. "Magnetic ballast" as power choke?
  158. At a loss
  159. True Dual Mono?
  160. Car battery charger design
  161. PSUD (Power Supply Unit Designer)
  162. SMPS for headphones amp ?
  163. Need Power Supply Help
  164. Clamping Hot and Neutral with TVS: worth doing?
  165. Musikal Fidelity E20/E30
  166. My take on the winding's phase-finder (AKA "Phasedots tester")
  167. use single side of dual supply
  168. LT3751 Driven, +/-400V Shunt Regulated Supply
  169. Which power switch???
  170. External psu to dac and headphone amp
  171. I don't know anything about psus, and i need one...
  172. Is there a reason why the output caps in this regulator don't match?
  173. Design for Power Supply with 24-0-24V 2A transformer
  174. Help me find a new Power transformer
  175. 2 box monoblock power supply advice needed
  176. Snubber Calculations
  177. Power supply el84se hook up
  178. Power supply blowing indicator lamp
  179. pcb or voltage regulator module for charging
  180. Best 5V SMPS ?
  181. Supply bypassing using 2nd order RC LPF
  182. small power transformer
  183. rail fail protection
  184. hot battery
  185. Topping A30 power supply recommendations?
  186. Dual Bank Floating Supercap Supply
  187. Any dummy 5X20mm fuse ideas?
  188. Switch mode power supply help
  189. Rca ground shocks
  190. Power Supply for Starving Student hybrid?
  191. Power supplies differences
  192. Dual 18 volt 5 amp power supply
  193. Single power supply for two amps
  194. Critique my capacitor board for Adcom GFA-535/545
  195. Single power supply for multiple (raspberry pi+amplifier) devices?
  196. Battery Charger Circuit
  197. SMPS power supply
  198. Power supply fo A class
  199. Lm317 tracking prereg phase issue
  200. Pi filter or not?
  201. Mei amplifier won't power up
  202. CLC Filter using the windings of two identical E+I Transformers
  203. Test Bench : SMPS240QR from Connexelectronics
  204. bridge rectifier
  205. SMPS audiopower Roberto PUPELLA
  206. Need a +15, -15, +48v supply
  207. Incredibly dumb LTspice question: simulating amp load for PSU
  208. Transformer---just need reassurance.
  209. LM317/337 Schematic Questions.
  210. Thermally Conductive Epoxy
  211. interesting ripple rejection claims
  212. Power supply replacement recomendations
  213. Power supply for JLH2003 & F5 Amplifier
  214. dual secondary question
  215. Inductor question
  216. 12 VAC power supply for audio amp
  217. LM10 Power Supply 0-50V 0-2A with temperature protection
  218. Schematic of flyback powersupply in Labgruppen FP13000
  219. Dumb moment - grounding center tap
  220. Thermistor Identification
  221. Transformer in separate case
  222. cap multiplier after the regulator?
  223. Mixing console power supply
  224. lm 4780 transformer
  225. Ultra-low noise battery over-voltage circuitry ...
  226. Audio Power Supply?
  227. line conditioner, ac incoming filter..... what to call, how to build?
  228. 200W LLC ZVS Power Supply with FSFR2100XS
  229. fuse for transformer primary.
  230. IEC standards documents for free
  231. Sharing double tap secondary between two amplifier boards with built-in rectifiers
  232. G2 stabilized supply from wavebourns pyramid - modifications?
  233. [NOOB] Many power supply questions on DIY project
  234. when is ground not ground?
  235. External/Autonomous Soft-Start
  236. Firstwatt F5 power supply
  237. Batteries
  238. Grounding Scheme
  239. Battery/DC Supply With Phantom Power
  240. Question about transformer with three taps
  241. Merlin's Gyrator and Cap Multiplier
  242. Mains powered bench/pedal supply
  243. 18650 battery management modules
  244. Looking for a ClassII toroidal transformer
  245. AZ1 PSU
  246. Filtering Capacitors Values
  247. Missmatched toroid
  248. Power suply capacitors change
  249. HV regulator
  250. Soft/slow start & inrush limiting

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