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Forum: Hobby Circuits and Small Projects Problems

Hobby Electronics Circuits, circuits samples, electronics in house and in cars, amplifiers, subwoofers, trasmitters, receivers, generators, meters.

  1. Sticky Thread Sticky: Read this before posting.

    Started by pranam77, 21st August 2009 09:14
    • Replies: 0
    • Views: 25,384
    21st August 2009, 09:14 Go to last post
  1. L293d - Input Voltage (motor operation)

    Started by utsavp1417, 15th October 2019 23:15
    • Replies: 3
    • Views: 479
    16th October 2019, 22:34 Go to last post
    • Replies: 7
    • Views: 463
    14th October 2019, 07:09 Go to last post
  2. Instrumentation AMP Virtual short.

    Started by mrblueblue1234, 9th October 2019 17:41
    • Replies: 5
    • Views: 726
    10th October 2019, 00:46 Go to last post
  3. Impedance Calculation

    Started by mrblueblue1234, 9th October 2019 01:09
    • Replies: 5
    • Views: 457
    9th October 2019, 22:48 Go to last post
  4. "Self-Healing" 12V 30A Circuit

    Started by Nabors, 2nd October 2019 00:37
    • Replies: 6
    • Views: 995
    3rd October 2019, 11:29 Go to last post
  5. SD card - pull-ups required?

    Started by gmorfeus, 1st October 2019 10:16
    • Replies: 6
    • Views: 420
    3rd October 2019, 09:29 Go to last post
  6. Current Measure using Current Transducer

    Started by adimon, 27th September 2019 19:11
    • Replies: 2
    • Views: 276
    28th September 2019, 01:55 Go to last post
  7. problem with pcb etching

    Started by ArakelTheDragon, 25th September 2019 06:53
    • Replies: 16
    • Views: 694
    27th September 2019, 23:49 Go to last post
  8. li-ion voltage reducer to 3volt - help needed

    Started by Javid.zare.s, 15th September 2019 01:20
    • Replies: 8
    • Views: 741
    27th September 2019, 09:32 Go to last post
  9. Another question about Holtek HT12E/HT12D pair

    Started by Mapuia, 27th September 2019 08:57
    • Replies: 0
    • Views: 115
    27th September 2019, 08:57 Go to last post
  10. Change colors of liquid crystal display

    Started by RevDNS, 9th September 2019 08:51
    • Replies: 7
    • Views: 807
    23rd September 2019, 23:14 Go to last post
  11. Portable headphone amp w. batteries

    Started by mikaelmark, 21st September 2019 14:13
    • Replies: 14
    • Views: 847
    23rd September 2019, 06:07 Go to last post
  12. Li-ion Battery charger need help

    Started by maxim10373, 16th September 2019 06:15
    • Replies: 4
    • Views: 414
    16th September 2019, 08:48 Go to last post
  13. Operating four Tx-Rx pairs in close proximity

    Started by Mapuia, 12th September 2019 16:43
    • Replies: 7
    • Views: 505
    12th September 2019, 20:58 Go to last post
    • Replies: 0
    • Views: 260
    11th September 2019, 18:43 Go to last post
  14. Testing LI Batteries with the help of a device

    Started by Prem Arjun, 10th September 2019 17:15
    • Replies: 2
    • Views: 289
    11th September 2019, 03:08 Go to last post
  15. H bridge with IR2110

    Started by maimahmoud93, 10th September 2019 12:11
    • Replies: 3
    • Views: 352
    11th September 2019, 01:21 Go to last post
    • Replies: 8
    • Views: 860
    9th September 2019, 12:09 Go to last post
  16. Clean power supply for RTC

    Started by pk2010, 8th September 2019 10:06
    • Replies: 2
    • Views: 403
    8th September 2019, 21:32 Go to last post
  17. [SOLVED] CD4053 connect unused pins

    Started by clros, 7th September 2019 17:02
    • Replies: 4
    • Views: 408
    7th September 2019, 23:07 Go to last post
  18. Astable Multivibrator not switching

    Started by MacIntoshCZ, 4th September 2019 16:05
    • Replies: 8
    • Views: 624
    5th September 2019, 15:24 Go to last post
  19. LED headlight pcb reverse engineering

    Started by FJR1, 3rd September 2019 22:03
    • Replies: 1
    • Views: 328
    4th September 2019, 08:52 Go to last post
  20. Two ps/2 ports and a FPGA

    Started by clros, 1st September 2019 18:48
    • Replies: 3
    • Views: 896
    2nd September 2019, 12:02 Go to last post
  21. Smartphones' Powerbank

    Started by Hunter666_444, 31st August 2019 18:29
    • Replies: 7
    • Views: 690
    2nd September 2019, 09:44 Go to last post
  22. [SOLVED] DC-DC converter to -3.3v

    Started by clros, 31st August 2019 09:30
    • Replies: 4
    • Views: 579
    1st September 2019, 03:22 Go to last post
  23. BP4836 BMW Reverse RDS

    Started by TripsD, 27th August 2019 19:18
    • Replies: 8
    • Views: 704
    30th August 2019, 15:59 Go to last post
  24. Designing a simple DC Massage Device

    Started by crowtor, 26th August 2019 18:49
    • Replies: 5
    • Views: 810
    29th August 2019, 15:30 Go to last post
  25. Looking 4 collaboration: Mobile Display

    Started by Mike_wth, 28th August 2019 15:26
    • Replies: 2
    • Views: 373
    29th August 2019, 15:16 Go to last post
  26. Is this a good Oscilloscope

    Started by electronicsman, 27th August 2019 18:43
    • Replies: 3
    • Views: 444
    28th August 2019, 02:47 Go to last post
  27. Problem with Logitech Audio PCB (No Sound Output)

    Started by Blackdragonier, 23rd July 2019 13:14
    2 Pages
    1 2
    • Replies: 34
    • Views: 2,589
    24th August 2019, 01:07 Go to last post