I would like some advice on which item is most suitable for digital logic and switch bounce spikes in circuit development.
I have an application with microswitches, timers, logic gates, stepper motors and relays, so I want to buy a suitable oscilloscope for the work in hand.
Having read your data I am not sure which of your items is most suitable.
For Microswitches with Switch bounce, Timers, and Stepper Motors, pretty much any picoScope would be fine as there are no stringent requirements in terms of measuring their action, fault finding, etc. (bandwidth and Rise Times are low, Voltage is comparatively low and not dangerous, so a x10 Probe is probably the most you will need, with a standard PicoScope, along with the Quadrature Serial Decoding function in our Software).
For Relays, you may want to actually drive them, which you may find hard to do with the Signal Generator on our PicoScopes, as the current that they can provide is limited. However you can either create a simple conditioning circuit to do that, such as this: ...using a suitable driver such as this one: http://uk.rs-online.com/web/p/mosfet-po ... s/7705181/
For Logic gates, it depends upon the type of Digital Logic that you will be using (which really depends upon your reason for developing these circuits). So, for instance, for use with your other circuit components I would assume that you won't be combining/building/debugging Logic circuits using very fast switching Logic in the form of individual gates such as these: https://docs.rs-online.com/b960/0900766b81623116.pdf. as they would be overkill for your application, and you would need to use high speed Digital Design techniques (e.g. high speed PCB layout, etc) So, this means that you wouldn't need PicoScopes with high Bandwidths.
If you are doing this to learn about these circuits, then you could be using any number of different types of systems already created for that purpose, such as reasonably fast boards like these: https://learn.sparkfun.com/tutorials/lo ... -guide/all, to really slow logic composed of individual relays like these: https://www.andrewkingsolver.com/creati ... gic-gates/. So, the Bandwidth that you need will be an important factor in determining what particular Model/Series of PicoScope you need.
Also, for debugging Logic, the total number of inputs/outputs that you would need to analyze, at the same time, would determine what type of PicoScope you may need. For instance, if you want to debug more than 4 inputs and/or outputs at once, from your Logic gates and other circuitry, then you would be better off considering a Mixed Signal Oscilloscope, such as our MSO PicoScopes, that have 16 Digital Inputs (as well as at least 2 Analog Input Channels) allowing you to perform Logic Triggering on combinations of the Digital (and Analog) Input channels.
There is very useful information provided on parameters such as Required Bandwidth for selecting a PicoScope here: https://www.picotech.com/library/applic ... e-tutorial
- Relay driver circuit.png
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