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  1. CaleJo

    Xenon flash capacitor charging

    Yes I am using a HBLED. Part of the problem is my particular application. I have to use a small aperture lens to avoid depth of field problems. I am testing a Xenon in hopes it will flood my scene far greater than the HBLED I was using. I guess I will see. I have looked into the optics and...
  2. CaleJo

    Xenon flash capacitor charging

    I hadn't thought of just using a DC-DC converter. I will be looking into this further. Thanks. As for the LED flash. I currently am using high power LED's (always on) for lighting and they aren't bright enough so I am trying the xenon flash. Are the LED flashes brighter/different than a...
  3. CaleJo

    Xenon flash capacitor charging

    itsmoked: Thanks for the link. I have actually checked into this solution, but can't find a super small 1:10 flyback transformer to use with it. The only supplier I found would only sell me 500 units at a time. I need to build 5 units only so this is not an option. The transformers in the...
  4. CaleJo

    Xenon flash capacitor charging

    alehman: I think you are right about the amperage. I don't think I used a regulator that could provide enough current. itsmoked: This particular flash unit is powered by 1.5V. The battery works fine but my application requires the use of a power supply (the battery would run out way to...
  5. CaleJo

    Xenon flash capacitor charging

    I am trying to modify a disposable camera flash unit to be powered by a DC power supply instead of a battery. I am trying to use a 12V power supply and regulate it to 1.5V. The problem I am having is that the capacitor won't charge using this method. I have tried a simple voltage divider as...
  6. CaleJo

    Photo-transistor floating baseline removal?

    I tested the circuit I posted earlier and was able to get it to work. Thanks VE1BLL and all others who posted. Your help is appreciated.
  7. CaleJo

    Photo-transistor floating baseline removal?

    It's needed to inject more current into the base when the photon's aren't enough.
  8. CaleJo

    Photo-transistor floating baseline removal?

    I am using a 2-lead photo-transistor. The base in this case is the photo sensitive surface.
  9. CaleJo

    Photo-transistor floating baseline removal?

    VE1BLL: I think I get what you said. Check out my schematic. It is based on your comment. I compare the signals to each other and have them cancel each other out until a fast signal come through. This is where the LP filter comes in. itsmoked: I am creating an outdoor camera...
  10. CaleJo

    Photo-transistor floating baseline removal?

    I am trying to design an analog trigger using a photo-transistor. I started by placing the sensor in a Wheatstone bridge to get a zero volt baseline. This works great if the lighting conditions don't change. However, the lighting does change and the baseline moves. I attempted to use op...

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