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The MB102 power supply module solves a small but constant annoyance in breadboard prototyping: getting a stable, correct voltage onto the board's power rails without running wires from a separate bench supply or juggling battery packs. It plugs directly onto a standard MB102-size breadboard and provides both 5V and 3.3V output, switchable per line, so each section of the breadboard's power rail can be set to whichever voltage the components in that section need.
Power for the module itself comes either from a USB connection or from an external 6.5V to 12V DC input, giving flexibility depending on what's convenient on a given bench, whether that's a spare USB cable or a small wall adapter.
Maximum output current is rated at under 700mA, which comfortably covers most small sensor and logic-level breadboard circuits, though it isn't meant for driving motors or high-current loads directly. Two independent power line controls allow different voltage settings on separate rails, a green LED confirms power is present, and built-in short-circuit protection through power-limiting circuitry helps prevent damage if a wiring mistake briefly shorts the output.
The board measures 53mm by 32mm by 23mm, sized specifically to sit across the end of a standard MB102 breadboard and feed both power rails without extra wiring.
Anyone doing regular breadboard prototyping who's tired of wiring in a separate power source for every project will find this module a convenient, switchable, dual-voltage power rail that stays attached to the breadboard itself.
3.3V or 5V, switchable, with an off setting as well.
Via USB, or an external 6.5V to 12V DC input.
Under 700mA.
Yes, it includes reverse polarity and short-circuit protection.
Standard MB102-size breadboards.
| Brand | Generic |
|---|---|
| Output Voltage | 3.3V / 5V (Switchable) |
| Selling unit | PCS |
