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  1. tedstruk

    need schematic for 110v to 220v built in wall wart

    I guess I could just build the adapter I have into the subwoofer case... that would remove the need for a built in one. heh heh!!
  2. tedstruk

    fried board Identification

    I got this out of an old PSU, and it appears to have a very large capacitor that has vaporized. I wondered if I am right or wrong in identifying it a a 220v adapter? can this board be reworked into a 220vac double for a sub woofer?
  3. tedstruk

    9v Guitar Amp w/out LM386

    I know I have heard of diode biasing, and its great if you want to control the system, but this is a raw power amp, the longer it loops....the higher the output. so use a 9v...wow thats a lot of power man! so if you loop it say... 5 times... thats like 45v! so you want some monsters in...
  4. tedstruk

    dum question...

    ground one side of a spst switch. connect a + battery terminal to the other. power your circuit with the - battery terminal. This isn't sounding right... driving a guitar fuzz box with 1.5v.. is this right?
  5. tedstruk

    handyman component tester

    never trust a device that has blown caps in the past. those that may blow caps in the future are ok... MODERATOR NOTE: Please ignore tedstruck. He spouts nonsense continually and is very near earning himself another holiday.
  6. tedstruk

    redundant circuitry

    I know this might sound a bit strange and off topic maybe.... I was looking at my motorcycle TCI and it utilizes redundant conditions to guarentee the spark fires at the right point in the timing. It might be pseudo op like this- If the pressure in the vacuum is low If the signal from the crank...
  7. tedstruk

    Default Prism Orpheus Interface with High Pitched noise and hum from SMPS PSU any help?

    I think thats the power caps... but there is only one. so it may be a few of the smaller ones beginning to go. Even when they don't bulge, especially in the power block, they commonly whine. take it to a shop and get their opinion, It isn't a good idea to put any pressure on the transformer...
  8. tedstruk

    arduino uno R3 schematic and datasheets

    I am a basic electronics novice, and I don't know how to tell you how strange it is to see so many "clone versions" of the popular system that you might not be getting a device that is good... It bothers me... I bought an Inexpensive clone, and I wondered if there is a way to test it and see...
  9. tedstruk

    220v speaker problems

    I bought one of those cheap ebay from china sub woofer amps and built a great home theatre sub woofer . When I bought it, I thought it was a 110v amp, but when I got it, it was a 220v. Dang, I thought I would never get a subwoofer... but I had a spare 110v to 220v lamp adapter, its not the...
  10. tedstruk

    bleeders and what I am doing....

    I found this great resource on setting resistance and adjusting load, but I closed my laptop and lost the resource. Setting the resistance I understand fully. 10% RULE- 1. SET RESISTANCE where the amperage is 10% of the LOAD [current bleed] where I is amps IBleed = I =(0.10)(9.1a)=.91ma...
  11. tedstruk

    Capacitor type comparison

    I found a complete database on the nichicon site, but I had to chance inputting the URL because the database was for alias ***. nichicon.com.database/e-pw.pdf where pw.pdf was the model of the cap. I manually put in HM and got the specs. The HW's are higher quality of the same specs, except...
  12. tedstruk

    Capacitor type comparison

    I have some bulged caps from a motherboard out of a HP pavilion, They are polarized 10x25 3300uf 6.3v 105 degree caps. nichicon HO149 HM(M). I have found type HW(M) and a slew of others, but on HM(M)and I can't find a datasheet on any of them. whats the difference between a MBZ T0610 and a...
  13. tedstruk

    Old Chart for newbie hackers!

    Here is a great chart for Ohms law. It simplifys the math so well, that I had to share it.
  14. tedstruk

    New apartment getting shocked on light switch screws.

    As I remember, static electricity is not an electronic genius' friend. It is different from any other electricity in the fact that it builds up naturally in/on/around the human body, and must be released to get rid of. I hate to say this. If you slow down, and dedicate your contacts with the...
  15. tedstruk

    Simple Resistance Division

    this is my chicken scratch. it was in a magazine some 5 or 6 decades ago. found it in an internet search. I don't have 150k's, at R4 or R5, but I do have 100k's I don't have the 1m, I replaced it with a 3m. The 6800 at R5 I put in a 10k. I have 100k audio sliding log pots, and I am blocking...
  16. tedstruk

    Simple Resistance Division

    Here is a break down of my sorry math.. Original Fuzz Board Total Ohms R1-22k R2-50k R3-10k R4-150k R5-6800 R6-150k R7-10k R8-10k R9-1m R10-50k = 1458800 Fuzz Board Total Volts 9 Fuzz Board Total Amps 6.1694543460378393199890320811626e-6 My Changes Fuzz Board Total Ohms R1-22k R2-50k R3-10k...
  17. tedstruk

    Simple Resistance Division

    This is a fuzz stomp box for an electric guitar circuit. The local radio shack closed and I can't just run to town and get parts anymore. The last ones I ordered from China took a month to get here. i am still waiting on potentiometers that were supposed to be here today. The circuit is the...
  18. tedstruk

    Restoring a Regal Do-Wa-Diddy by fOXX

    final att Here is the test schematic on my end. I think I have everything right which means I probably have something wrong... I dedicated my treadle variable to PINS A and PIN H, these two pins are bridged on the board. When the circuit is on, (not in standby) four switch pins on the right...
  19. tedstruk

    Toshiba satellite laptop problems

    I had a satellite that did this, and I found a bad wire in the Power supply cord. Still works fine today.
  20. tedstruk

    Simple Resistance Division

    As my diagram shows, the use of a parallel resistor is used to divide the circuit, but does the resistance of the circuit change due to its inclusion? I would have to deduce that it will effect the circuit at least a little bit. Is a the series/parallel rule or should I do a total the current...
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