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  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

    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...
  3. 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
  4. electrodoc2

    star trek style sliding door

    I've not been on for a while due to designing a new P.C. room. (computer HAS to come out of my bedroom).. So i got to thinking about a "space room" with many features from various space films also with a futuristic look AND an electric sliding MDF and laminate flooring based door. this is what i...
  5. electrodoc2

    Cheap 8 channel R/C ancillary controller for models

    would have inserted the circuit here but dunno how to do it yet so i'm affraid its a small 75k attachment. an idea i'm toying with.
  6. electrodoc2

    handy tip for intefacing your PC with projects

    SAFETY FIRST!! NEVER CONNECT A PROJECT DIRECTLY TO YOUR P.C. ALWAYS USE OPTO ISOLATORS!!! THIS WILL SAVE MOTHERBOARD/PORT DAMAGE! Before trying this, disconect your printer it may damage it!!!! You can use your printer port as a controller for electronic projects. get QBASIC either from a dos...
  7. electrodoc2

    sensitive low frequency filter

    Hi, Long time hobbiest first time op amp user! PLEASE would someone help as i cant get to grips with the formula for bandpass filters/gain or anything regarding electronic filters.! All I want is a phisicaly small high gain low frequency filter circuit which will use a xtal/moving coil mic to...
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