Hobby Electronics

113 Circuits

  1. Electronic air flow detector »
  2. 2 transistor amplifier »
  3. Parabolic dish mic amplifier »
  4. 16w bridge amplifier »
  5. Mega phone circuit 9v »
  6. 12v car lamp flasher »
  7. Alkaline battery charger »
  8. Battery charge indicator »
  9. Low frequency clock »
  10. Audible continuity tester »
  11. RF Detector »
  12. Air flow detector »
  13. Fibroptic transmitter »
  14. Fibreoptic receiver »
  15. led flasher »
  16. Electronic coin tosser »
  17. IR body heat detector »
  18. Ion detector »
  19. (TBD) Laser diode driver circuit »
  20. Pulsed laser driver »
  21. Solar sun tracker »
  22. Darkness monitor »
  23. Electroscope »
  24. ECG amplifier »
  25. Signal generator »
  26. Event counter »
  27. Low voltage DC speed controller »
  28. Adjustable power supply »
  29. Geiger counter »
  30. Two band radio »
  31. Short-wave scanner converter »
  32. Electronic siren »
  33. Two tone siren »
  34. Long period timer »
  35. FM transmitter »
  36. VHF beacon transmitter »
  37. Ultrasonic motion detector »
  38. Dummy alarm »
  39. 2 watt stereo amp »
  40. Electronic stethoscope »
  41. Car indicator alarm »
  42. Nicad battery charger »
  43. Lithium charger »
  44. Resistance tester »
  45. FM stereo decoder »
  46. Video detector »
  47. Bar graph display »
  48. 9v neon flasher »
  49. Led flasher with audio »
  50. Electronic dice »
  51. Three channel 'snap' »
  52. IR illuminator for night sights »
  53. General IR receiver »
  54. IR laser light detector »
  55. Light beam receiver »
  56. Solar power battery charger »
  57. Electronic level »
  58. Digital voltmeter »
  59. Audible metronome »
  60. Underwater microphone »
  61. Morse practice oscillator »
  62. Noise generator »
  63. AM Oscillator »
  64. AM Radio »
  65. Short wave radio »
  66. Electronic Whistle »
  67. Switch on delay circuit »
  68. Telephone recording circuit »
  69. Electronic thermostat »
  70. Temperature controller »
  71. Wireless microphone »
  72. Ultrasonic generator »
  73. 1.5w 12v audio amplifier »
  74. RIAA phono amp »
  75. 1 watt Morse transmitter »
  76. Low level audio amp »
  77. 10w 12v audio amplifier »
  78. 80w 1 chip audio amp »
  79. Cigarette lighter 9v adapter »
  80. High power 12v amplifier »
  81. Lead acid trickle charger »
  82. Battery condition indicator12v »
  83. Adjustable continuity tester »
  84. time delay circuit »
  85. Crystal radio »
  86. Electronic lock »
  87. LED Christmas lights »
  88. LED flasher »
  89. Electronic 'snap' »
  90. Wireless IR h'phone transmitter »
  91. Wireless IR receiver »
  92. Negative ion generator »
  93. 12vdc he-ne laser supply »
  94. Laser diode transmitter »
  95. Programmable light relay »
  96. Solar power supply »
  97. ELF monitor »
  98. Strain gauge sensor »
  99. Visual metronome »
  100. Heartbeat transducer »
  101. Electronic fish lure »
  102. UHF Oscillator »
  103. 13.5kv power supply »
  104. Kirlian power supply »
  105. Economy short-wave radio »
  106. Transistor relay driver »
  107. Latching relay driver »
  108. Relay delay circuit »
  109. Touch switch »
  110. Proximity alarm »
  111. Wire tracer »
  112. FM bug »
  113. Ultrasonic receiver »

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