Electronics > Beginners
Circuit(s) to teach basic oscilloscope functions
pixelkind:
Hello everyone,
I run the electronics lab in a big maker space and currently setting up workshops to teach our members the basics on how to use the equipment.
I was wondering if there are any ready-made circuits out there to help me teach the usage of oscilloscopes or if I have to design something myself. I know some companies got boards to show off some functions. What would you put into a basic class/workshop to teach the usage of an oscilloscope? Without needing to explain too much about the electronics itself. It should focus on using the scope.
Thanks a lot!
Wimberleytech:
An oscillator that provided a square wave and a sine wave output.
It would need to have a variable frequency.
Have the option to drive an RC to measure rise time of an exponential.
This video might give you some ideas. There are others on youtube as well.
RoGeorge:
Any oscilloscope have a square signal generator for probe calibration. That signal should be enough for teaching the basics.
Gyro:
An XR2206 based function generator board is probably as good as anything, giving you Sine, square, and triangle with variable amplitude and frequency. For example: https://www.ebay.co.uk/itm/XR2206-Sine-Triangle-Square-Output-1HZ-1MHZ-Function-Signal-Generator-DIY-Kits/163307056802 Although you would be best advised to find a local seller at the moment.
Most other stuff tends to be DDS these days, but they don't really give you many options for practising probing around the PCB.
daqq:
RC oscillators are nice. Maybe a microphone and a whistle?
A nice visual demonstration might be passing light through the fins of a fan and measuring the rotational speed by sensing the light on the other side via a phototransistor. This way you can demonstrate how to manually read the frequency/period of the pulses and calculate the RPM from that information. Also, demonstrate slowing it down with your hand?
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