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  1. 73's de Edd

    Meaning of some german words on the front of a radio

    So it looks like it was just like television was being handled in the early post VHF days . .with the then onset of additional UHF band ststions.. . Channels 2-13 were no problem to handle with bandswitch tuning, but the influx of UHF stations in the channel 14-83 created a problem for easily...
  2. 73's de Edd

    Meaning of some german words on the front of a radio

    Sir Richard9025 . . . . . . . I think that back in the 1970s, that it worked like this. That set of 6 push buttons are just like were being on old car radios . They are all mechanically latched together such that only one may be pushed in and when another pushbutton is pressed in the...
  3. 73's de Edd

    Transistor Help!

    ADKX researches out . . . but that assigned units marking code is having two pins more than yours has . I am seeing no visible case damage within the optical clarity limits of the photo that you have supplied. Check out the AD below and see how your device checks out . . .on performing a...
  4. 73's de Edd

    1970 Delco Radio Repair - audio distorted

    a 1970 GM am/fm car radio . . . . A more PRECISE model number and brand info needed if any researching of its present designed circuitry is to be analyzed . Also second the use of the unlimited, and sag free power, as would be provided by a HOT car battery when testing its audio output at...
  5. 73's de Edd

    Help with fence charger schematic

    Sir barryg . . . . . The magical words were . . . .a la Minder . . . . . Maybe reverse engineer the defective one and repair it, there is not much to them. Since you have already BOUGHT . . . a purposed GOOD one . . how about providing some good squared off and close up , full in the frame...
  6. 73's de Edd

    Can you make my 12v LED light up?

    Sir Dave 2000 . . . . all of your post is being received well here . . from your Sunny Espanya . .. I am going to make some inital assumptions that your old dash indicator was merely using a RED ? BLUE? GREEN? . .which is it ? indicator LED which operates down in the 2-3 voltage . .ish...
  7. 73's de Edd

    Coffee machine power issue

    Since your country of origin is not given, up to this moment I didn't know if you were a 120 or 220VAC person. The back emf spike supressor across the relay coil looks to be a mere 1N4148. That is not being a Zener, but I have sooooooooooo many that I typically always use a 1N 4007 series...
  8. 73's de Edd

    Z333 Power Supply Question

    Sir Sashikanta . . . . Sure looks like your AC power took a lightning VERY-VERY-VERY nearby. Since the AC powered " HOT" half of the power supply probably initially took out the DC rectifiers and then popped the switching transistor that you see mounted to the heat sink and the excess power...
  9. 73's de Edd

    Coffee machine power issue

    Say feller . . . . wanna go fer it . . . and blow some od yer hard earned munney for a 1 watt 12volt zener diode ?
  10. 73's de Edd

    Reed switch door alarm help

    I was interpreting the situation as that merely being a front door alarm that would let people be working in the back catacombs and accomplishing great and wonderful things. If a customer opens the front door, it thereby alerts the need of the holder of the short straw to go up front to wait on...
  11. 73's de Edd

    Coffee machine power issue

    Sir phlox . . . . . This unit seems to be quite a bit of a wierd duck on the shown board in the respect that is using a MINUS 5 VDC minor and a MINUS 12 VDC main power supply but that 12V supply never leaves this board and is used just for supplying coil drive to your your power relay. In...
  12. 73's de Edd

    TV Antenna Signal Combiner/Splitter Question

    Sir Wireaddict . . . . . At my prior posting time . . . . . there was one GOLDEN link that I absolutely couldn't think of, since I had only used it back at day one at onset of the digital changeover. Also, Nashville was not thought of as being one of your alternatively receivable sites...
  13. 73's de Edd

    Need help with making a circuit for a peltier module

    Decisions . . .decisions . . .decisions . . . https://www.google.co.in/search?tbm=isch&slpassthru=1&q=Peltier%20Module%20Thermostat%20Circuit%20Diagram 73's de Edd
  14. 73's de Edd

    Reed switch door alarm help

    Sir student786786 . . . . . (Class of 2025) With due initial consideration that you just might already be utilizing the umbiquitous 555 timer in a chip. Why not use this initially timed power disruption for accomplishing that feat. Adjust with a lower value of either Rx or Cx to shorten the...
  15. 73's de Edd

    Replace power MOSFET in subwoofer plate amp, Sledge STA-1000D

    I think that I see what they were doing. I need your eyes on the board to confirm that the gate drive resistors are 220 ohm units and being unharmed and completely intact. HOWEVER . . . of the two snubbers placed across the FETs, that one has its resistor blown, and the light relection on...
  16. 73's de Edd

    Carpenters mistake

    ONE FINAL PLEA . . . . . Carpenter . . . . ehhhhhhhh . . . . Assuming that you have seen INNNNNNNNNNUMMMMMMMMMERABLE nails on the worksite and assuming that if to see one of them sticking out of a tire on your vehicle . . . . now I ask you . . .would it be receiving the same lackadaisical...
  17. 73's de Edd

    Taking Garmin Nuvi camping...

    Mme Alissa Thomas . . . . . . . . ( I am seeink that u r Amerikanski . . .) Looks like the averaging of all of their models adds up to 10 watts or that being a 12 volts at 830 milliamperes power consumption.. The best thing that I would have is my Li-Ion based laptop battery which is 50-60...
  18. 73's de Edd

    TV Antenna Signal Combiner/Splitter Question

    Sir Wireaddict . . . . . . I tend to think that someones info or your research is oriented towards analog broadcasting of days past, in properly phase matched stacked antennas. My choice would be the best solo UHF antenna with a low noise mast mounted preamp right at the antennas...
  19. 73's de Edd

    Need help identifying part

    Sir Arun Kamath . . . . . Soooooooooo your resistor is not burnt up, just being discolored from somewhat of an overheating. With no AC power connected to the unit: Pull out your DVM and place it in diode test mode and: Check the 3 diodes placed AROUND the units main filter cap . . . . which...
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