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Fused Relay Block
Schematics
Copyright © 2013 William Robison
Schematic
This is a Fused Relay control board
for adding aftermarket headlamps.
Board
Board
PCB Package
Board
PCB Package
J1, Power
Middle pin of the 5-pin connector (pin 3) is the battery input pin.
End pin (pin 5), on the right, is the ground connection.
The right 2 pins are from R1 providing both normally open and a normally
closed connections.
The last connection, on pin 4, is the normally open pin from relay R2.
This relay may be configured to switch either power or ground. Ground is
switched by movinf the fuse from the "F2" position to the "F3" position.
This set of connections are terminted with #6 studs installed directly
on the board. If we can find brass machine screws, they may be sopldered to
the board to improve conductivity.
The power pads are 0.375" diameter and are spaced 0.500 apart.
Ring Terminals for 12/10 AWG wire #6 or 3.5mm. These part numbers have a narrow
ring (less than 0.290 diameter) to allow adequate clearance on the board
and they are not insulated (so they require heat shrink after crimping &
soldering).
TE Connectivity
34892
Mouser
Digikey
TE Connectivity
2-35476-1
Mouser
Digikey
Molex Inc
0190690232
Mouser
Digikey
Molex Inc
0190690232
Mouser
Digikey
J10, Control
The control connecion is using a simple screw terminal block with 65
connections. 12 volts and ground are on the ends (+12V on pin 1 and GND on
pin 6).
The two coil terminals from each relay are presented on the connector
allowing flexibility in the control connections.
The 12 volt line is fused with F10 (nominally 5 Amps fuse)
Spare pads are provided on the +12V and GND nets to allow
connections to be made directly on the bottom of the board.
Screw Terminals (0.200" pitch)
TE Connectivity
282841-6
Mouser
Digikey
TE Connectivity
282857-6
Mouser
Digikey
FCI
20020316-H061B01LF
Digikey
Phoenix Contact
1730654
Mouser
Digikey
Molex Connector Corporation
39544-3006
Mouser
Digikey
R1/R2, Relay
Relay sockets are required as the board is drilled for round pins.
FUSE_02 Relay: G8JN-1C6T-R-DC12
Mouser
Digikey
(35A)
FUSE_02 Socket: VCF4-1000
Mouser
Digikey
VCFM_02 Relay: VFMA-15F41-S01
Mouser
Digikey
(25A)
VCFM_02 Socket: VCFM-1000
Mouser
Digikey
Fuses
Fuse Holder (socket)
Mouser
Digikey
ATC Fuse 5A
Mouser
Digikey
ATO 257 Fuse 5A
Mouser
Digikey
ATO 257 Fuse 10A
Digikey
ATC Fuse 15A
Digikey
ATO 257 Fuse 15A
Mouser
ATC Fuse 20A
Mouser
Digikey
ATO 257 Fuse 20A
Digikey
ATO 257 Fuse 25A
Mouser
Diodes D1/D2
Pads are provided for mounting a diode or resistor
across the coil on the bottom of the board.
This is to allow the board to be controlled using a
FET or Transistor.
.
PAC-TEC Enclosures
These aren't carried by Digikey.
