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Dark Seeker - TV-to-Scope Converter

2016-01-18 07:35  
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What the feel what like when you situated in the dark? Then, this TV-to-scope converter might be the tool you're looking for... Materials that needed:

    An OscilloscopeA LM1881Sweep generators

    TV to scope converter

    If you refer to the above schematic, you'll notice that the VGA-to-Scope converter has been simplified, while op-amp buffers and inverters were simply eliminated. The continuous current supply to charge up the capacitor can be replaced by a 1Meg pot from 5V to charge up the capacitor constantly. If you placing the pot at the right position, the capacitor will be charge up, and the trigger signal stopped the 555 to discharge the capacitor.

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