For safety of your Laptop, you can use cheap USB SoundCard (under $5). The value of Potentiometer could be increased up to 100K Linear, for the use of Oscilloscope with an input of above 5 volt.ĥ. The value of 22K Resistor could be increased up to 820K Ohm for the use of Oscilloscope with an input of above 5 volt.Ĥ. This Oscilloscope has a frequency range of: 20Hz to 20 kHz (complying with the Soundcard capability).ģ. This Oscilloscope could be used for a maximum input voltage of 5Volt.Ģ. Sample of close-to-perfection voltage signal without noise.ġ. This application is 14-day Trial, could be purchased at a price of not more than (US $9.95).īelow are several voltage signal tests, among others signals from mobile phone charger, laptop charger, battery, etc. The application is ZELSCOPE, free download at.
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