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  1. jknightandkarr

    Need Heaphone/Mic Amp Circuitry

    Ok, first I have a set of turtle beach ear force x11 gaming headset with the following specs: Headphones: - 40mm diameter speakers with neodymium magnet - Speaker Frequency Response: 30Hz - 20kHz, >120dB SPL @ 1kHz - Condenser Microphone Frequency Response: 50Hz - 15kHz - Cable length...
  2. jknightandkarr

    Sanyo VWM-710

    I am in need of schematics / service manual for a Sanyo VWM-710 vcr. I got hit by a power surge and now its non-functional. Already checked fuse, its fine, so I need something to help me locate the issue, I am not seeing any obvious issues. I know I can fix it, just need some help. Thanks. Joe
  3. jknightandkarr

    Parts suppliers

    I hope this is the correct area, but I am looking for sources of bulk component supplies. The only one's that I know of are Digikey, Mouser and Jameco, 2 of the 3 of them have what I need but WAAAAAY too much, plus I don't need 250 or 400 or esp 800 count orders...... I need Blue 0.4"...
  4. jknightandkarr

    Need help with a project

    I am trying to make this KITT's dash compass andi have the leds and using a microcontroller to power them but need help on how to wire them so i use the least amount of conponents possable. I thought of darlington transistor ic's but on the 4 10 led bargraph onesi think both anode n cathode will...
  5. jknightandkarr

    Oscilloscope calculations

    Ok just to make sure i am doing this right on my Instek GOS-620 scope. Volts= No divisions × volts/div x probe setting My case v= 2.0 x 0.1 x 10 so v=2. Now freq is #of div/cycle × time/div i have t=6.6 x 50us=330us n freq=1/t or 1/330= 3.03 kHz buuuut the signal is the scopes 1kHz, 2Vp-p...
  6. jknightandkarr

    PCB manufactureres

    I am looking for the cheapest pcb manufacturer that i can. I have a project for a friend and OSH Park going to charge almost $900 for all the pcb's i need. Granted theres 3 copies of each board, but i cant do any thing with the other sets. Any help isappreciated. Thanks Joe
  7. jknightandkarr

    I don't know what I"m doing wrong.......about to give up....

    I've tried the toner transfer method 5 times now, 2 times, on regular paper, 2 times on tracing paper & once on photo paper & everytime the results are the same, half the toner stuck on the board, half on the paper.  I put the image on the pcb & secure it in place with masking tape...
  8. jknightandkarr

    Some articles

    I was looking over the articals area, particuarly this one http://www.electronics-lab.com/articles/etching/index_en.htm and noticed that some areas of the auto translated from greek to english areas are not understandable such as this part... Turn on the UV box lamps because need roughly 5...
  9. jknightandkarr

    Re: made my first PCB --- but there are questions :p

    GREAT, thanks guys!, this is the perfict topic I've been needing.  I'm getting ready to make my own pcb's, just waiting for my new toner cartrages to arrive by mail.  Is there any tips/tricks that might help?  I tried the toner transfer method via photo paper, but I either didn't leave the paper...
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