3 ms·
very easily substitute using FETs. Essentially the same as relays and BJTs but much easier to control logic FETs than BJTs.
by ultrasounder 4y ago
very easily substitute using FETs. Essentially the same as relays and BJTs but much easier to control logic FETs than BJTs.
- squarefoot 4y agoBut that would introduce more complexity (polarity, biasing, etc) that would distract from the initial purpose. With a relay they should only learn how connecting a battery to pins 1 and 2 closes the contacts on 3 and 4. Using relays with more throws they can also learn the basics of logic gates, flip flops, etc. I believe that relays still have a place for educational purposes.
- ultrasounder 4y agoYup! Agree 100%