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  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Recent content by tech_dragon

  1. tech_dragon

    Any way to make a positive ion generator ?

    timed or remote turn off I would set it up using a timer for on and off such that if it survives or isn't struck it would turn itself off before going to get it. Or you could do it by remote control. You could probably use some cheap RC from rat shack or some thing like that. Peronally I would...
  2. tech_dragon

    small hardware ram drive

    want it to be seen as a harddrive As I stated before I would like for this device to be seen by the bios even as a harddrive. If anyone has schematics for any harddrives or know any of the signals the "HD" would need to send out to tell the system that it is a harddrive of X size it would be...
  3. tech_dragon

    small hardware ram drive

    thanks for the idea thank you for the idea on anther place to discuss this idea, at this point I dont want to make windows fit into it however that could be in idea for a bigger version of it if it with a battery backup or something along those lines. at this point I am mainly after getting the...
  4. tech_dragon

    Electrolitic capacitors: max voltage question

    not a good idea? I did some further research on this and found that in doing repairs, it is not a good idea to change the uF of the capacitors used. So I could go with a 100uF 20V but shouldn't use a 150uF 20V. If anyone has more information on this feel free to say so, as I am just going off...
  5. tech_dragon

    Electrolitic capacitors: max voltage question

    I have a question along the same lines what about the uF is that just a "safe" working value or would replacing a capacitor with a higher UF be a bad Idea? For exaple I have a 100uF 16V capacitor and was thinking of replacing it with a 150uF 20V.
  6. tech_dragon

    small hardware ram drive

    I am trying to build a small "ram drive" that will plug into an IDE cable and be seen by the computer as a harddrive. my idea is to use a few old 72 pin ram chips dropped into sockets on the board. I was thinking of using 8 slots. 4 Megs per slot. I also know I am going have to have circutry...
  7. tech_dragon

    PC to SNES Mouse

    I hope this is allowed but it may help. this might help to get someone started on schematics for an adaptor or modification. here are some specs on the SNES game port where the mouse plugs into. 7 pins... 1 +5v White 2 Data Clock Yellow 3 Data Latch Orange 4 Serial Data Red 5 N/C...
  8. tech_dragon

    bootable ram drive

    I remember running accross a set of schematics for a bootable "ram drive". It was an old set of schematics and was only a 1 meg or so ram drive. I am looking for a way to tell the computer (bios) that there is a harddrive hooked up. and the specs of the drive. the device will plug into the IDE...

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