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  1. 73's de Edd

    Esr Meter Build

    .. Sir peter g . . . . . . . If R6 is decreased in value it will produce a lower meter reading . . .if increased in value it will produce a greater meter reading. Optimally, you want it to be same value as R5. BUT I initially need to know about your transformer sub and how you...
  2. 73's de Edd

    Found a DIY multimeter: tell me about it

    . Sir Cart . . . . . . . Muiltimeter . . . .multimeter ?. . . . au contraire . . .seems like what you actually have there is a power supply with its power output being the two Load terminals to the right. Then you use the coarse and fine voltage adjustments to trim in your desired...
  3. 73's de Edd

    Wireless doorbell help

    .. Sir Robertfhegreatnewb. . . . . . . In response to your perceived and implied . . . . . .Say whaaaaaaaaaaaaaaaaat ? ? ? . . . from our Right Revered, Honorable and Esteemed . . . . . hevans1944 . . . aka . . . "the hopster". Let me initially give you some design parameter...
  4. 73's de Edd

    help with ac

    Sir breeze. . . . . . . I am a knife maker and i have a logo i electro etch onto my knives. i have been using one of my fathers old power supplies from when he used to do CB and HAM radio work. only problem is its only dc power. when you etch dc is what removes the metal (wich sometimes...
  5. 73's de Edd

    XK X250 FPV Camera Antenna Repair

    . Oh tayyy ! Pull out ye olde tyme ohmmeter and find out about those 3 solder connections that I asked about. I am really expecting a ground to the left connection, a center RF connection and then another ground connection to the right. And yes . . . . I can fill you in on a "custom hand...
  6. 73's de Edd

    Esr Meter Build

    . YES . . . . .those bi phased shunting diodes Vf thresholds are exactly what establishes the test level that reaches your capacitor being tested. Ayyyyyyyyy Caramba ! ¿ parece que las instrucciones están en un idioma diferente? HEY MAN ! those instructions are in Portuguese ! I no...
  7. 73's de Edd

    Repairing my CRT's severed power cord

    .. Sir thisisntright . . . . . . . I'm looking to repair my CRT's power cord Really meaning ? I'm looking to repair my CRT design of televisions power cord. Not to worrry . . . . the HIGH voltage is at the heavy insulated red wire going into the side of the CRT. On the AC cord just do...
  8. 73's de Edd

    Replace fried range hood transformer with cheaper alternative?

    . “I believe the appropriate metaphor here involves a river of excrement and a Native American water vessel without any means of propulsion.” ― Sheldon Cooper following the same thought train . . . and semantics . . . . .as being applied to an electronic transformer “ My heavens . . . ...
  9. 73's de Edd

    Esr Meter Build

    . Sir pete g . . . . . . . Ayyyyyyyyy Caramba ! ¿ parece que las instrucciones están en un idioma diferente? The test voltage level is partially "carved in stone" in that circuitry by the back to back 1N4xxx shunting diodes. Initially, sub in some 1N5817's to see if you can live with...
  10. 73's de Edd

    Can anyone give me the name of this?

    Sir James Bodenham. . . . . . . My vote . . . . .without a further equipment model and brand ID . . . . . is for the Japanese Solderless Terminator Resolution still prohibited making out your unit too good, but see if yours has the small guides on the sides and the basic same...
  11. 73's de Edd

    Technics SA-5760

    . Sir Gary88 . . . . . . . Which is your problem channel . . .the right one or the left one ? 73's de Edd . . .
  12. 73's de Edd

    XK X250 FPV Camera Antenna Repair

    Sir kagaos. . . . . . . In further exploring . . . . If it is using an amplified antenna . . .then they would want full Vcc power to it. Look at the very bottom of the board with its white micro Sipex connector and to its right is the main Vcc electrolytic filter capacitor . . .with its +...
  13. 73's de Edd

    XK X250 FPV Camera Antenna Repair

    Sir kagaos . . . . . . . Soooooo . . .it looks like the right top black "stub" antenna is what your missing and looked like. Probably only available from the factory. Looks like the two end board solder connections are symmetrical ( interchangeable) and the center is being being a...
  14. 73's de Edd

    Replace fried range hood transformer with cheaper alternative?

    Sir Samaja . . . . . . . Those photos should have been taken outdoors . . . . in subdued sunlight. However . . . . . with my applying a little "NASSER" pixel dithering and time averaging enhancement, I can still come up with: NOW I can see that the unit applies its created Hi Freq AC...
  15. 73's de Edd

    Defective PCB/scroll saw

    . Sir KTW . . . . . . . WIth every little bit of information . . .it is becoming clearer on its mechanics. http://www.manualslib.com/manual/486723/Craftsman-113-236400.html?page=24#manual Looks like this was Sears best contractor grade 20 inch scroll saw unit made in 1999 in Taiwan and...
  16. 73's de Edd

    Defective PCB/scroll saw

    . Sir KTM . . . . . . . Behold . . .what doth mine eyes detect . . . . . at the apex of yon RED arrow . . . . .is that being a "potty" metal failure ? With that combination of a rotating shaft from the motor connecting to an eccentric to produce a repetitive reciprocating linear action . ...
  17. 73's de Edd

    Defective PCB/scroll saw

    . Sir KTW . . . . . . . That is what I told you was coming down the pike, back at my post # 18 . . . look back and defresh your memory bank. Usually they mold an arrow into the housing on the LED portion telling you the light path between the two . . .thereby differentiating the LED...
  18. 73's de Edd

    what is this part

    Sir John Gilbert . . . . . . . My first and only vote is for it to be a power silicon diode that was INTENDED to be pressed into a hole in a heat sink . . .thus the milled side edging. Looks like this person just used it out in the open . . . at a reduced power capability, of course. As for...
  19. 73's de Edd

    Zeroing out a LM317 reference voltage with a zener - PSU build

    Sir chopnhack . . . . . . . Ahhhhhh . . .yes . . .one of friend . . . 'ole Robert-o Reeds contributed N&V tidbits . . .but being from sometimes back . . .circa 2007. BUT . . . . it just seems like you did not follow the letter of the law. . . . in its design concept, if utilizing the N&V...
  20. 73's de Edd

    Making a Powerful Solenoid

    . Sir Xyius. . . . . . . I . . . .and others for sure . . . . . .are still looking for a bunch of initial information which was not even touched upon. What will the solenoids operating voltage be ?. Is the solenoid to be used for just a short pulsed operation or for longer duration or...
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