1. 6N15 (6J6)Mini hybrid push pull amplifier
  2. 6N15(6J6) Mini Single End amplifier
  3. 811A Single Ended Class A2 audio amplifier
  4. RIAA network design for phono pre-amp(pdf)
  5. 6J1(6AK5) 6P1 Single End Class A audio amplifier
  6. One tube Regenerative radio power by one AA battery (build in inverter)
  7. One Lithium ion cell DC DC step up concept for Portable tube radio
  8. 6J2(6AS6) 6J1(6AK5) super hetrodyne tube radio power by 12V
  9. Homemade MC Phono Cartridge LOMC
  10. Homebrew TV (2006years Experiment)
  11. 6AB8/ECL80 1 watts Single End audio amplifier
  12. 6SN7 300B GZ34 single end Audio amplifier
  13. Rewind scarp transformer for vacuum tube project(pdf)
  14. MC34063 Low Frequency Boost Converter
  15. Simple 6V inverter using 2N3055 build in 1990 years
  16. Synthesis Willamite Flourscent powder
  17. Experiment with Vacuum pump for lamp and tubes
  18. One Transistor Audio amplifier power by Single AA cell
  19. 6P15 Triode Connection 1.2Watts SE audio amplifier
  20. 6C19 Triode Single End 2Watts Audio amplifier
  21. 6J1/EF95/6AK5 one tube audio amplifier 148mW
  22. DIY scan coil and focus coil for Radar CRT(2014)
  23. Repair Megger (insulation tester) 2017
  24. 8051 microcontroller SPI Wave player for music box
  25. Restore portable vacuum tube TV ECKO TX275
  26. Design and Build RCC converter
  27. Restore 80s 2Band MW/SW transistor radio.
  28. SuperHet tube radio with transistor IFT (rewind).
  29. Using EE16 ferrite transformer to clone ST-32 transistor radio output transformer.
  30. Make Rechargeable NEDA-213 45V battery and repair Emerson 838 radio
  31. Vacuum tube amplifier 6N2 6P15 with flyback SMPS power supply
  32. 6N15 (6J6/ECC90) 6V hybrid amplifier with TDA2282
  33. Restore Australian 1930s Sander Tube radio.
  34. Solid State Vibrator. (voltage step up)
  35. Discrete Transistor FM superhet radio.
  36. Experiment 2P2 battery tube to operate at Lower anode voltage (6V,12V,24V)
  37. Experiment with Flat CRT and sony Flat CRT 04JM.
  38. Faulty 2AP1 Scope CRT re-use for TV with magnetic Scan coil.
  39. 10 transistor FM radio power by 1.5V AA battery.
  40. Cassette Tape Experiment.
  41. Simple one tube audio amplifier.
  42. Simple one tube FM super regenerative receiver circuit analysis
  43. Experiment tube base colpitts style FM super regenerative receiver.

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