Oscilloscope is an electronic test instrument that allows projection of voltage dual trace oscilloscope pdf to be displayed and learned. A specific circuit in the oscilloscope creates repeated moving signals from left to right.
This repetition creates non-repeating waveforms that can be learned. Oscilloscopes are commonly used to observe the exact wave shape of an electrical signal. Below is a picture of common Oscilloscope. Once I need an oscilloscope to see the electrical voltage ripple in the car. Ignition systems, alternator rotation, high-beam lights flicker, and others are generally emit noise or voltage ripples, Well, this is what I want to know, size of the noises, etc. PC as Oscilloscope by adding some components as interface.
Those components are simple and quite cheap! The 22K Resistor serves as voltage safety limit into laptop soundcard. The Potentiometer serves as input voltage resistor. If the voltage is above 5volt, adjust the potentiometer necessarily to prevent the soundcard from being damaged by excessive voltage input. Use shield audio cable to prevent induction around the cable. The Oscilloscope is ready for use!
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Below are several voltage signal tests, among others signals from mobile phone charger, laptop charger, battery, etc. Sample of close-to-perfection voltage signal without noise. This Oscilloscope could be used for a maximum input voltage of 5Volt. The value of 22K Resistor could be increased up to 820K Ohm for the use of Oscilloscope with an input of above 5 volt.
The value of Potentiometer could be increased up to 100K Linear, for the use of Oscilloscope with an input of above 5 volt. Nice to see someone added blocking diodes to protect the circuit and also protect the PC. I had a friend, retired nuclear physicist, a really knowledgeable guy. Be careful and you can do a lot with this little circuit. Good tool to get familiar with scopes.
The selection knob can be the fine-tuning knob and you can use the standard available probe connections. I will post it here when my approach is successful. There are several versions of this free software oscilloscope program. It can also use the PC microphone input as a signal source. I did use a pair of zeners between the rails.
The fact that there is a signal generator incorporated into the software is really good. PC SOUND-CARD SCOPE INTERFACE FACILITATES DC RESTORATION” Instructable. Can the Soundcard Oscilloscope be used for BOTH projects? Can I use, for example, a transformer and current-limiting resistors between the Tesla Coil and the O-scope leads to protect my computer?
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