Free-Way Blade Switches: Truth Tables and Photos

[stevewf]

Here's a summary of this our findings on the Free-Way Blade switches so far. Props to Yogi B for intense cross-checking and for highlighting traces.

[Note: There's discussion at Freeway Switch (Blade) that led to this summary post case there's need for background]

"Truth Tables":
These tables show which terminals get connected within the switch, for each position.

Freeway 3B3-01 Truth Table

SPOILER: Click to show

Position#1 : (OP BH)
Position#2 : (OP BH NH) (GD NG)
Position#3 : (OP NH)    (GD NG)
Position#4 : (OP BH A)  (GD NH)
Position#5 : (OP A B)   (NH BH)
Position#6 : (OP NH B)  (BH NG)

  image by  Yogi B

Freeway 5B5-01 Truth Table

SPOILER: Click to show

Position#1 : (OP BH)       (GD BT)
Position#2 : (OP BH MH)    (GD BT)
Position#3 : (OP MH)
Position#4 : (OP MH NH)    (GD NG)
Position#5 : (OP NH)       (GD NG)
Position#6 : (OP BH)       (A NG)     (B BG)
Position#7 : (OP BH MH NH) (GD BT NG)
Position#8 : (OP NH)       (GD BT)    (BH NG)
Position#9 : (OP BH NH)    (GD BT NG)
Position#10: (OP NH)       (GD BT)    (MH NG)

  image by  Yogi B

Freeway 5B5-02 Truth Table

SPOILER: Click to show

Position#1 : (OP BH)
Position#2 : (OP BH 2+)
Position#3 : (OP BH NH 3+) (G3 BT NT)
Position#4 : (OP NH 4+)
Position#5 : (OP NH)
Position#6 : (OP BH)       (GD BT)
Position#7 : (OP BH MH)    (GD BT)
Position#8 : (OP MH)
Position#9 : (OP MH NH)    (GD NT)
Position#10: (OP NH)       (GD NT)

  image by  Yogi B

Photos/Illustrations:

Typical "Contact Shuttle":
What I call the "shuttle" moves inside the switch body when the player moves the blade handle. The shuttle carries three sets of contacts, which touch the pads on the switch's Printed Circuit Board (PCB), which makes electrical connections between the terminals. Six pairs of contacts on the shuttle to touch the six pads on the PCB.

Above: The Contact Shuttle shown inside a 5B5-01 switch. The other blade switches have a similar component.

3B3-01 PCB photos:

SPOILER: Click to show

Above: The PCB of the 3B3-01


Above: 3B3-01, reverse side of the PCB, showing the "jumper" trace


Above: The PCB of the 3B3-01, showing the traces on the reverse side, plus some shading to help see the circuits

5B5-01 PCB photos:

SPOILER: Click to show

Above: the PCB of the 5B5-01


Above: 5B5-01 PCB, reverse side, showing the traces there


Above: the PCB of the 5B5-01 with reverse traces shown, plus position of the shuttle contacts in Position#10

5B5-02 PCB photos:

SPOILER: Click to show

Above: PCB of the 5B5-02


Above: 5B5-02 reverse side of PCB, showing the traces there


Above: PCB of the 5B5-02 with reverse-side traces shown