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  1. Martaine2005

    Beginner project

    The only thing you have not designed yet is the experienced fisherman will know when to change technique. Going from a small smooth 'yo-yo' pattern to erratic lifts and drops of the rod. I know a really good designer who could do just that!! With a 555 timer. He loves them. @Arouse1973 Martin
  2. Martaine2005

    MagneTek Series 6400, Model 6415, Power Converter

    Sorry to say this, but it appears this converter is not suitable for charging. Here is a link to an old thread I have just been reading. Martin
  3. Martaine2005

    0402 vs 0201

    Nah, they just need a bigger heat sink....
  4. Martaine2005

    Help with this part - 64-2092PBF

    Hi Dave, I was reading about the TO-263 as I had never heard of one. And found this chart. Package Junction to Case (°C/Watt) Junction to Air (°C/Watt) TO-3 5 60 TO-39 12...
  5. Martaine2005

    Dashcam interfering with DAB reception

    Hi paj, It definitely sounds like the dashcams' wiring needs shielding. Or more shielding. I have read that a 300mhz ferrite 'snap on' core can do the trick. Apparently, it's something to do with the initial bands given to DAB and then extra bands afterwards. Those extra bands are the ones being...
  6. Martaine2005

    Dashcam interfering with DAB reception

    I wish you came here a few months back!!
  7. Martaine2005

    MagneTek Series 6400, Model 6415, Power Converter

    Here is the schematic for your converter: http://www.parallaxpower.com/6400_6600/6400schematic.pdf The manual: http://www.parallaxpower.com/6400_6600/6400 owner operator guide.pdf There should be at least 1 fuse. Not sure how they are installed. Either in a square fuseholder you push in to pop...
  8. Martaine2005

    0402 vs 0201

    Hi rahul, As long as the 0201 components have the same values or higher, it wont be a problem to make the circuit half the size or smaller. It might be a problem for repairing it though.:eek: Martin
  9. Martaine2005

    Which resistors, capacitors, etc. to choose for H-Bridge DC Motor Controller?

    Hi bonbonbaron. I ask myself the same question. I am sure I will get shot down here by the experts but, for me it depends on the individual circuit. I am having a major problem with a 9v circuit at the moment. Also I would add to break down the circuits to individual voltages. That's where the...
  10. Martaine2005

    Help with this part - 64-2092PBF

    No, I am the real 'Martin', slim.:)
  11. Martaine2005

    Help with this part - 64-2092PBF

    Here is the TO-263 from Vishay. But it's only the package size. Not the exact IC. Martin
  12. Martaine2005

    Help with this part - 64-2092PBF

    These ones are cut off too. I have no idea why. Somebody will though. Sit tight. Yes the TO-263 is the SMT version of the TO-220 I think. But cannot handle as much power due to the lack of the metal tab. Martin
  13. Martaine2005

    Help with this part - 64-2092PBF

    Hi shady, The only reference I can find is an NPN 2092 transistor. But somebody will be along shortly to let you know exactly what they are. EDIT: The centre pin has been cut off and they seem to be connected in series too. Martin
  14. Martaine2005

    Headphone cable broke

    Lol, perhaps a little practice on tidying the repair would help too.. On a side note, that white rolled item top left quarter of your photo may or may not help in hands shaking.:p Martin
  15. Martaine2005

    Headphone cable broke

    Glad you sorted them out. Maybe after a few repairs, you wont have such a shoddy soldered joint!:) Martin
  16. Martaine2005

    Headphone cable broke

    Hi Samuel. As already mentioned, it is the strain relief to stop the cable being pulled out and also stops the cable fracturing/breaking. You can carefully cut it off (as already mentioned), Use a sharp knife and make slow passes until you are through it. Or just cut it off and re-attach the...
  17. Martaine2005

    0402 vs 0201

    The simple answer is YES. You can replace higher values too, in certain circumstances. 1/4 watt, 1/2 watt or 2 watts wont matter either. This is their maximum dissipation. As Davenn replied, please show a circuit. Martin
  18. Martaine2005

    old garage door opener circuit board

    No dramatics this side of the pond. Just SO, 117Vac primary is your mains in...from the wall socket (or what ever). Sorry John (line voltage). The secondary is the 38Vac to power the circuit connected. Basically, Primary is IN and secondary is OUT. Martin
  19. Martaine2005

    old garage door opener circuit board

    Haha, love you too john. I might have completely mis-understood the OP . But, wasn't the question about Primary and secondary? Geezzz,
  20. Martaine2005

    old garage door opener circuit board

    Hi James, The input voltage is your mains voltage. That is the PRIMARY. The secondary is the lowered outputput voltage from the transformer. Primary is 220v 'for example', Secondary is the 12v output . Years of physics wont help you with the basics, Basics are what you asked, and basics is...
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