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FAST Power Filter Board for Nano-controlled machines

Wiring, high voltage, and electricity can be dangerous. Read this first!

The voltages and electricity discussed here can be dangerous and could cause property loss or death. It is your responsibility to ensure you are comfortable doing the things discussed here. Furthermore your local jurisdiction may have regulations or rules which differ from what we discuss here, including wiring colors, standards, techniques, etc. Seek professional guidance from someone local to you if you are unsure of anything you're doing here. Also there could be errors, omissions, or typos here. Use this content at your own risk.

Part Number: FP-PWR-005-2

The FAST Power Filter Board provides an elegant way to integrate switching power supplies into a pinball machine with a FAST Nano Controller. This board allows a physical switch to be wired to the coin door to kill the high voltage at the power filter board when the coin door is open. (This switch only disconnects the high voltage. The 5V and 12V lines still run so the FAST controller and boards stay powered on.) The power filter board also has a switch output which opens and closes when the high voltage is enabled and disabled. You can wire this switch into any IO board switch input to trigger your game code to display that "High power disabled" message when the coin door is opened.

If your coils are not working...

The "enable" switch output MUST be closed in order for this board to provide high voltage. If you are just setting up your board for testing, put a jumper (or use alligator clips, etc.) across Pin 1 and Pin 3 of J2 "ENA IN" to enable the high voltage outputs.

In addition to supporting the main high voltage ("HV", most likely 48V) power circuit and 12V and 5V, the FAST Power Filter board has two additional voltage circuits (labeled V1 and V2) for additional needs you may have.

V1 is enabled and disabled via the high voltage switch and also is wired into a large capacitor. If you have a need for 24V or something like that, you can use the HV line for that. If you do not have other high voltage needs, then you can use the V1 line as an additional 48V line, and then all three capacitors will be used together for that combined HV. To do this, simply wire your 48V input to both the two HV inputs and also to the V1 input. (So three incoming +48VDC input lines.)

V2 is intended for additional lower voltage needs and is always on. Most people use it for an additional 5V line since the FAST Power Filter Board power circuits are limited to 7A max, and it's possible to exceed 7A on your 5V line if you have a lot of LEDs. In that case, you can get a larger 5V power supply and split the 5V inputs across the 5V and V2 inputs, and then each 5V output could use 7A (or whatever limit your PSU has, just be sure that the combined 5V outputs and fuses are LESS than the total rated output of your power supply.)

See the wiring guides and documentation (linked below in the "additional wiring resources" section) for details on all these topics.


  • Sits in-between your power supplies and your machine.
  • Supports five independent power circuits, up to 7A each.
  • Acts as a ground tie point for all DC power grounds in your machine.
  • Has a physical switch input to enable / disable high voltage outputs. (e.g. for the coin door switch)
  • Has a switch output which represents the state of the high voltage enable switch (e.g. to let your game code know the door is open and high voltage has been disabled)
  • All 5 power circuits are independently fused. All fuses are 6x30mm on this board. LEDs under each fuse quickly show lines that are active and have non-blown fuses.
  • Three large capacitors are used to offset voltage drop on the high voltage circuits when used with high-current drivers like flippers, magnets, and large motors.
  • Typical power circuits used include:
    • 48V for coils, etc.
    • 12V
    • 5V
  • Two additional power circuits can be used as needed.
    • V1 is a high voltage circuit, can be used as an additional 48V or for an alternate (24V, or...?) high voltage as needed. (12V minimum)
    • V2 is a low voltage circuit, most often used for an addition 12V or 5V in machines with a lot going on that need more than 7A from one of those voltages. (If this is 5V, the fuse status LED for this line will be dimmer than the rest, but that's expected and fine.)

Connector Wiring

The following diagram is from the Power Filter Board Wiring guide, which is part of our series of step-by-step pinball machine wiring guides. See those guides for wiring details for this or any FAST Pinball board.

Mechanical Diagram

Block Diagram

Status LEDs

  • ENABLED means the high voltage is enabled. If this LED is off, then your coils won't work and you will be sad. The high voltage is only enabled when a switch is closed across the "ENA IN" connector (J2). If you are just testing things, install a jumper or use alligator clips across pins 1 and 3 to close this connection and enable your board.
  • 5 LEDs, one under each fuse, which light up green when the fuse is installed and working. (One for each fuse for each voltage.)

Connector Housings Needed

  • Qty 2, 3-pin .156" Female Connectors
  • Qty 2, 12-pin .156" Female Connectors

Connector Pinouts

J1 PIN ENABLE OUT (Switch Input Triggered on Coin Door Open) 3-Pin .100″
+ Enable Out + OUTPUT
Switch Return OUTPUT
\/ KEY N/A
J2 PIN ENABLE IN (HV+ & V1 Enabled when Shorted) 3-Pin .100″
SW Coin Door Switch Input INPUT
\/ KEY N/A
GND Coin Door Switch Return INPUT
J3 PIN POWER INPUT 12-Pin .156″
HV+ High Voltage (48V) INPUT
HV+ High Voltage (48V) INPUT
GND High Voltage Ground from Power Supply INPUT
GND High Voltage Ground from Power Supply INPUT
5v 5 Volts INPUT
5v 5 Volts INPUT
12v 12 Volts INPUT
\/ KEY N/A
GND Ground from Power Supply INPUT
GND Ground from Power Supply INPUT
V1 Auxiliary Voltage 1 INPUT
V2 Auxiliary Voltage 2 INPUT
J4 PIN POWER OUTPUT 12-Pin .156″
HV+ Fused High Voltage (48v) OUTPUT
HV+ Fused High Voltage (48v) OUTPUT
GND Power Return Ground OUTPUT
GND Power Return Ground OUTPUT
5v Fused 5 Volts OUTPUT
5v Fused 5 Volts OUTPUT
\/ KEY N/A
12v Fused 12 Volts OUTPUT
GND Power Return Ground OUTPUT
GND Power Return Ground OUTPUT
V1 Fused Auxiliary Voltage 1 OUTPUT
V2 Fused Auxiliary Voltage 2 OUTPUT
This guide is part of our complete series on wiring your FAST Nano-controlled pinball machine. Click to see the rest!

Wiring guides for FAST Nano-controlled pinball machines

We have many guides and a complete wiring walk-through for your entire pinball machine powered by a FAST Nano Controller. Please read and understand all of the wiring guides before you start planning and physically wiring your machine.

Baseline wiring skills & knowledge

Important wiring and electrical background information you need to know before you start planning your machine's wiring.

FAST Nano-controlled Pinball machine wiring guides

The guides below walk you through a complete machine wiring, section-by-section. The numbers in the drawing match up to the numbers in each diagram. We assume you follow these in order. Click the image to zoom in.

  1. AC line in & power supply wiring
  2. Earth ground wiring
  3. Power filter board wiring
  4. Fuse Theory & Selection
  5. FAST Controller & I/O Board wiring
  6. Driver & coil wiring
  7. Flipper wiring
  8. Switch & opto wiring
  9. LED wiring
  10. Adding more power
  11. Cabinet wiring & power distribution

Documentation Feedback? Requests? Confused?

Hi! I'm Brian, and I'm responsible for the documentation at FAST Pinball. If you have any feedback, requests, corrections, ideas, or any other thoughts about this documentation, please let me know! You can email me at Thanks!

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