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  1. CDRIVE

    Infrared Obstacle Detection

    Firstly, the author is not driving a servo directly from any of the circuit variations shown. The output of all of his circuits feed the ADC input of a Picaxe. Secondly, servos aren't reversed by reversing their polarity. http://www.servocity.com/html/how_do_servos_work_.html Chris
  2. CDRIVE

    Solar Charge Controller: add Load Output?

    That would indicate that the fuse isn't currently used. That's very odd. Chris
  3. CDRIVE

    Solar Charge Controller: add Load Output?

    Top center. It doesn't look like any fuse I'm familiar with. Chris https://www.electronicspoint.com/attachments/8522d1370275864-solar-charge-controller-add-load-output-cam00033-1670891688.jpg
  4. CDRIVE

    Solar Charge Controller: add Load Output?

    Steve, what's the component marked "F"? One leg is connected to "L-". Chris
  5. CDRIVE

    Solar Charge Controller: add Load Output?

    Do you have a schematic? Chris
  6. CDRIVE

    charging internal battery in led light

    Not that it's related but one of your photos appears to have a microphone in the upper right corner of the PCB. Does this lighting system employ a a sound activated mode? Chris
  7. CDRIVE

    Demodulation

    I'm sorry for the delay but better late than never. Let's start with this attachment. It shows an RF generator that is outputting a 500KHz Carrier, Amplitude Modulated by a 1KHz tone. The modulated carrier is then fed into a simple RF Detector (Demodulator), which is nothing more than a...
  8. CDRIVE

    a simple noise filter, L or C

    A schematic is always helpful. Chris
  9. CDRIVE

    Simple transistor circuit problem

    Yes, Picaxe chips are more expensive than their counterparts but this is because there's no additional cost for software or hardware. For one offs or small runs they're worth the higher cost for novices. Chris
  10. CDRIVE

    Demodulation

    If the Lord is willing and the Creek don't rise I'll be posting what I promised by this weekend. Sorry for the delay. Chris
  11. CDRIVE

    Simple transistor circuit problem

    I'm a Picaxe pusher. Especially for novices! I think they make a 40 pin model. http://www.picaxe.com/ Chris
  12. CDRIVE

    Simple transistor circuit problem

    Kris, I had to type this up in Notepad for a quick paste and go because my DSL, actually Tel Line, is having issues. When I posted that circuit it wasn't clear what rasklangus' project was. He wanted a discrete circuit that can do two things. One was light a single low current LED with a...
  13. CDRIVE

    Simple transistor circuit problem

    At this point it would be best to fully describe your project. Chris
  14. CDRIVE

    Capacitors as timed circuit

    I Googled "555 Edge Trigger"...
  15. CDRIVE

    Demodulation

    I'm sorry for the delay but I lost my DSL over the past 2 days and what I have now is sporadic. I have been working off-line on what I promised you though . While I do have access I want to tell you that the only thing that dietermoreno will bring to this discussion will be absolute chaos! I...
  16. CDRIVE

    Demodulation

    Ha Harald, I refrained from posting when I returned home. At least I think I did! :D That's funny Steve! Before I post anything for Vick I have to model a 1N34 but first I'm going for a long bike ride. The weather is a bit cooler and dryer today, so I'm hoping not to look like a wet rag...
  17. CDRIVE

    Capacitors as timed circuit

    Assuming you're referring to the circuit at the top of the page I don't see VR1. That circuit is a monostable and is what you're looking for but it needs some tweaks. As it stands it's level triggered on the Trigger pin 2. If S1 is held closed it will never time out. Google "Edge Triggering a...
  18. CDRIVE

    Demodulation

    I'm going to a retirement party shortly. When I return you may want to scrutinize anything I post. :D In the interim you may want to follow this topic. https://www.electronicspoint.com/half-wave-rectifier-smoothing-capacitor-t260275.html See anything similar to your Detector- Demodulator...
  19. CDRIVE

    Demodulation

    Well, in that case this thread is going to veer off into "Home Work" territory. The mods may elect to move this thread to https://www.electronicspoint.com/electronics-homework-help-f106.html I will supply you with schematics, plots and TOP as I walk you through it but I won't give you...
  20. CDRIVE

    Capacitors as timed circuit

    Well, as Bob pointed out ... There's also no flash rate or duty cycle given. We need this information. Chris
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