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Showing content with the highest reputation on 08/12/2018 in all areas

  1. Hi, Just build this power supply. Works Ok but will blow output transistor instantly if output is shorted ! Any suggestion
    1 point
  2. Generating a very high voltage with a small battery is an interesting idea. In theory, a transformer can produce any voltage, depending on it's turn ratio. They can also be cascaded. Are there any designs that utilize cascaded transformers, and if so, why isn't one transformer used?
    1 point
  3. keron

    negative ioniser

    Hi all, I am looking for a circuit that operates in 9-12 DC and will generate voltage in 2-3KV range with negiligible current. I came across many designs but interested if anyone knows any circuit that uses common step down transformer with primary and secondary reversed as the first step in conversion.I am planning to use Cockcroft–Walton multiplier to increase the voltage from transformer. Flyback transformers are difficult to find /not familar for me to use.But would defenitely consider if its readily available I came across this circuit and like to know if something similar can be tried with a step down transformer http://www.aaroncake.net/circuits/flampdrv.asp If anyone know any schematic with small flyback transformers I would be glad to try.I am only concerened about availability. The whole purpose is to make a negative ion generator to clean dust from my vinyls. I donot want to use the ones based on Pizo electric but somehing that will generate a massive negative ion flow that will neutralize all sticky dust on my LPs .The prime consideration is making it as small as possible.
    1 point
  4. Hero999

    negative ioniser

    The same basic blocking oscillator circuit, normally used to drive a flyback transformer, can also drive a centre tapped or dual primary mains transformer. Here's an example of a capacitor charger using a mains transformer with a centre tapped primary. It should be able to drive a voltage multiplier circuit. C1 1 uF D2 1N4948 R2 +------||------+ T1 1.2kV PRV 1K 1W | | +-----|>|-----/\/\---+------o + | R1 4.7K, 1W | red ||( blk | +-----/\/\-----+------+ ||( | | yel )||( +_|_ C2 + o----------------------------------+ ||( --- 300 uF | red )||( - | 450 V | +--------------+ ||( | | Q1 | ||( blk | 6 to 12 | |/ C +--------------------+------o - VDC, 2A +----| 2N3055 Stancor P-6134 D1 _|_ |\ E 117 V Primary (blk-blk) 1N4007 /_\ | 6.3 VCT Secondary (red-yel-red) | | - o------------+------+ http://www.repairfaq.org/sam/samschem.htm#schssi
    1 point
  5. This is my ZVS Flyback driver with pcb/desinged. It is very simple. ZVS Flyback Driver ;D <Y> ./'\.
    1 point
  6. No, lead acid batteries are far too heavy. I was looking at maybe NiMH or more likely some LiPo batteries commonly used on RC cars and the like. Looking at 3-6AmpH class batteries. Might lean towards 12V, since there is so much standard stuff for that as far as wiring and other components. Safety is of course important and any good suggestions on grounding/shielding are welcome and appreciated.
    1 point
  7. A transformer will deliver a high enough voltage that you want. High voltage transformers are expensive, but can usually be found in electronics products no longer used, and be cascaded for high voltgage. Be aware that high voltage burns and shock can occur, and a high enough voltage can lay you in the hospital.
    1 point
  8. 10,000V at 0.02A is 200W which is a lot of power for a little power supply.
    1 point
  9. Silent Jack

    Tesla Coil Ebook

    There's numerous levels of teslas available with good detail on construction and theory on www.instructables.com . I like the pictures and step-by-step instructions they provide there. And they cover anything from small palm scale coils to large, light up your barnyard size ones. Give it a peek.
    0 points
  10. ante

    Tesla Coil Ebook

    It is very well explained in the links provided by Hotwaterwizard above!
    0 points
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