Recent content by electrodoc2

  1. electrodoc2

    Thompson Television LOPT's Flyback Transformers For Sale

    Hi, I Have 10 Thompson Flyback Transformers for sale HR Part No= HR 8317
  2. electrodoc2

    tan-timers wanted to buy

    HI, i have Hundreds of Television coin meters Clockwork @
  3. electrodoc2

    home intercom schematic needed

    Yes a picture of both sides of the board if possible if you could put a sticker on one corner going from the solder side to the component side may help with orientation of the components.
  4. electrodoc2

    NEED HELP FOR SONY KV29FX30B

    ***__-- TUBE BASE VOLTAGES CAN AND WILL!! BITE--__*** I'm not familiar with this model but providing the chip that you refer to isn't fastened to a heatsink then this procedure is a failsafe way of finding where the fault is. It can be used on any transistor driven gun array and i always employ...
  5. electrodoc2

    home intercom schematic needed

    what is the exact problem with it?
  6. electrodoc2

    sensitive low frequency filter

    The filter is working very well now since changing C1, C2 and C3's values to those you specified ,thanx guru. However the frequency response is very dependant on the setting of RV1 and the intensity of the audio signal, with OR without the 3.3nf cap. The unit will be used in a very loud...
  7. electrodoc2

    transistor uses

    http://www.electronics-lab.com/forum/index.php?board=15;action=display;threadid=794
  8. electrodoc2

    Beginners Transistor Help

    When using a transistor as a buffer/inverter I find a simple way of remembering the rules for these jobs are as follows.. To remember the transistor type when looking at schemetics I use Point iN Please and Not Point iN, these are for the emitter arrow directions and the voltage polaritys for...
  9. electrodoc2

    Night rider scanner

    http://www.designnotes.com/CIRCUITS/ledflash.htm this does 10 leds left to right to get a fading effect simply modify the led driver like this link shows.
  10. electrodoc2

    Transistor Audio Filter Design

    Hopefully this new theory thread will help in my own and other users quest's to understand How these filters are worked out.. A few questions to sart the ball rolling would be... 1)..I can see that R2 + the volume control (RV2) sets the gain for the primary amplifier but what about R3 and R6...
  11. electrodoc2

    sensitive low frequency filter

    thanks for that audioguru, but i do know about the frequencies of audio structures, i'm just not that good at filter theory. would you mind explaining the theory behind my filter? I'll start a new thread in the theory forum. Here's the follow on link...
  12. electrodoc2

    Transistor Audio Filter Design

    Hi all, this is a forum linked from another thread i started for a Low Pass Filter which would give a visual display of the Bass beat from a disco system. Here's the link to that... www.electronics-lab.com/forum/index.php?board=13;action=display;threadid=332
  13. electrodoc2

    sensitive low frequency filter

    ??? Thanks audio guru. I used a 22nf + a 2.2nf for the 18nf and the 3.3nf respectively ( numbers on caps where 223 (22nf) and 222 (2.2nf). If these capacitor code translations are wrong then please mention it. shurely these values should be ok? but it wouldnt play ball. The 2.2nf...
  14. electrodoc2

    sensitive low frequency filter

    I require a led to flash to the Bass Beat of music using a microphone as a pickup source, hopefully using the PMK103 circuit outlined above.
  15. electrodoc2

    connect four

    would this just be a visual display of the game or do you want the game to know when you have connected four?
See more
Top