SwitchTrick Switching Power Supply Board Helps you Test your Breadboard Circuit

We’ve covered several power supplies for breadboards over the years including toaster breadboard power supply with variable voltage output, or the portable, battery-powered MEGO power supply that allows you to power your project on the go.

The SwitchTrick is another one of those breadboard power supplies but with testing in mind, as it takes input from various sources, and with jumper selection for voltage from 1.8V to 6V allows you to easily simulate different battery voltage levels, or the test the overvoltage protection of your circuit for example.

SwitchTrick Breadboard Power Supply
Click to Enlarge

SwitchTrick key features and specifications:

  • Step-down converter – TI TPS62160 3-17V step down-convertor adjustable from 0.9-6V out at 1A.
  • Power Input – 3V to 17V via
    • 5.5×2.1mm power jack for 9V battery or wall supply
    • Micro USB connector for 5V
    • 2-pin JSY PH connector for battery
    • 2x large plates holes for alligator clips
  • Power Output (selectable by a jumper)
    • 1.8V
    • 2.5V
    • 3.0V (e.g. for simulating an almost depleted lithium battery)
    • 3.3V
    • 3.7V (e.g. for simulating a nominal lithium battery)
    • 4.2V (e.g. for simulating a fully charged lithium battery)
    • 5.0V
    • 6.0V
    • ADJ – Just solder in your own resistor to create any voltage in the 0.9-6.0V range
  • Circuit Protection – All except the alligator holes are diode-protected
  • Misc
    • On/Off switch, power LED
    • Diode bypass jumper
    • Unpopulated header  with Enable and power pins to connect the board to a microcontroller

Test Circuit with Breadboard Power Supply

Some breadboards may have power rails that are around 0.050″ off from usual, so they’ve also added a duplicate power rail header pattern (see bottom left above) to work around the issue.

The SwitchTrick switching power supply has been designed in the US by  Alpenglow Industries and sells on Tindie for $29. You can learn more about it and see it in action in the embedded video.

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4 years ago

That’s nice, as most of the AMS1117 ones tend to heat a lot if powered from more than 5V. However this one is far too expensive for hobbyists in my opinion, especially when you factor in the risk of frying it, as a lot of the stuff that usually gets connected to such breadboards :-/

4 years ago

The regulator has short circuit/over temp protection that should go a long way to it not letting out the smoke. Does seem a little pricey though. If you have the patience you could pick up a good bench supply off of ebay for $20 more.

4 years ago

I guess it’s the price of convenience, I would also spend the extra money and get something a bit more useful.

4 years ago

Something tells me its limited volume run, which would fall in price if higher volume, but its good concept and i like that she is thorough in her video.

4 years ago

Went to the local electronics shop asking for a Voltage Regulator 5V->3.3V, they did not had, they wanted to sell me a Vreg wit ha resistor to adapt the output voltage for 1EUR. I ended ordering a roll of 100 of AMS1117 on Ali.

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