spoke about voltage regulators. anything with a 78xx is a regulator. the ‘xx’ determines voltage.
7805 > 5v; 7303 → 3v, etc.
always add decoupling to a voltage regulator.
two types of power supplies:
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linear → has a transformer; is, therefore, big.
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switch → uses pwm; non-stable; has noise; small.
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use some kind of adhesive to secure components on pcb (like hot glue, epoxy, silicone).
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sometimes through-hole > smds for heat-dissipation.
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voltage -> you decide; current -> the load decides.
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always ensure that:
i (supply) > i(circuit) && v(supply) == v(circuit)
- ac → ac (regulate voltage) via a transformer.
- ac → dc (bridge rectifier)
- dc → dc (voltage regulator)
