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What are the main advantages of using breadboard instead of PCB?

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Works great for quick prototypes using through-hole resistors, capacitors, and DIPs with 22ga solid-core copper wire.

You need to be aware of the disadvantages though.

  • not meant for withstanding high voltages (don't plan on anything above 48V)

  • not meant for carrying high currents (I'd consider anything over 20mA questionable and anything over 100mA objectionable)

  • high parasitic inductance and resistance

  • high parasitic capacitance between adjacent rows

The last two are issues with high bandwidth circuits; don't expect to send around 10MHz analog signals easily. One way of getting around it a little bit is for sensitive signals to use every other row and ground the in-between rows. (this is somewhat like using a guard ring) This also works well for reducing unwanted Miller capacitance e.g. between base and collector pins of a bipolar transistor.

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You can re-use breadboard and move components/connections around to try different things.

That's about it really. Flexibility to experiment.

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  • It is reusable.

  • This makes it easy to use for creating temporary prototypes and experimenting with circuit design.

  • A variety of electronic systems may be prototyped by using breadboards, from small analog and digital circuits to complete central processing units (CPUs).

  • These are typically high-quality breadboard modules mounted on a flat casing.

  • The casing contains additional equipment for breadboarding, such as a power supply, one or more signal generators, serial interfaces, LED or LCD modules, and logic probes.

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