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  1. alfa88

    In need of RF part ID part 2

    I'm stumped on this part too. Same story except I searched for MCL. I'm guessing it's a crystal filter .
  2. alfa88

    In need of RF part ID part 1

    Well I'm stumped. I pulled this off a Glenayre board. It was in a shielded area. I did a Google search and looked on the Toko site. Nada. Any clues? I want to make some RF experiments with these.
  3. alfa88

    Odd Sony WEGA Problem

    I've got an odd problem with my Wega projection TV. Everything works well except that it keeps adding digital channels once it is tuned off. It's almost as if there is a bios battery that is going bad. Any expert opinions?
  4. alfa88

    stepper motor control with a parralax basic stamp

    I realize that this is mostly PIC and Atmel territory but I got a Parralax Basic Stamp kit as a gift awhile back. I ran through the book and then it all gathered dust. But now I may have a job lined up and knowledge of stepper motor control would be a plus. I have some steppers from various...
  5. alfa88

    Function Generator Chip

    I'm curious if there is company still manufacturing function generator chips.
  6. alfa88

    SWTPC Schematics

    I'm looking for a schematic and possibly the board pattern for Southwest Technical Products' Universal digital instrument plug ins. I already have the mainframe documentation.
  7. alfa88

    Pic Programming Board

    I was scavenging an old pager transmitter and on of the boards was a PIC16C71. Is there a schematic where I could kludge together a programming board?
  8. alfa88

    Need Help Identifing Transistors

    I tore into a 20 year old pager radio and these transistors were in the power amp section. The boards they are on were mounted on massive heat sinks. I tried a Google search and a NTE cross ref and came up dry. A Motorola 587-3737-000-B and a RFP100-100RH (manufacturer unknown).
  9. alfa88

    Sherwood RX 4103 Schematic

    I just came across a Sherwood RX 4103 stereo and it turns on and I hear a relay clicking but no audio. If anyone has a schematic I would appreciate a copy.
  10. alfa88

    Braun Toothbrush Schematic

    I'm trying to resurrect a dead Braun toothbrush and have the circuit partially figured out. It uses inductive coupling to charge the battery. One half of the circuit is for charging and the other half is used to control the motor. What I found so far is that there was a open from the motor body...
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