Power Distribution & Control, Inc. products

The PDC Model DCI-82 dual channel DC isolator is designed specifically to meet the California Department of Transportation, Model 242 specifications. Each channel ofthe DC isolator shall present a true signal (ground closure) at the output ofits optical coupling device when a contact closure causes an input voltage ofless than 8 VDC, for longer than 5 milliseconds. A transition from a true to a false signal at the output shall occur when the respective contact closure causes an input voltage ofgreater than 12 VDC. All electronics are provided on a single sided P.C. board with an aluminum front panel. The P.C. board is provided with a solder mask, silk screen identifying all component locations and is conformally coated to resist adverse environmental conditions.

The PDC Model DCI-90 dual channel DC isolator is designed specifically to meet the New York Department of Transportation, Model 242 specifications. Each channel ofthe DC isolator shall present a true signal (ground closure) at the output ofits optical coupling device when a contact closure causes an input voltage ofless than 8 VDC, for longer than 5 milliseconds. A transition from a true to a false signal at the output shall occur when the respective contact closure causes an input voltage ofgreater than 12 VDC. All electronics are provided on a single sided P.C. board with an aluminumfront panel. The P.C. board is provided with a solder mask, silk screen identifying all component locations and is conformally coated to resist adverse environmental conditions

The PDC model SSF-86 solid state flasher is a dual circuit flasher designed for the Traffic Control Industry. This unit is conservatively rated up to 20 A per circuit. The flash rate is 56.25 flashes per minute and does not vary due to voltage or temperature variations. With the zero voltage switching design, there are no contacts to wear out or deteriorate due to arcing or corrosion. Also, extended life ofthe bulbs can be expected as well as reduced Radio Frequency Interference (RFI). The extruded aluminum heatsink provides more than adequate heat dissipation.

The PDC SSS-86 Solid State Loadswitch is a tri-pack solid state relay package designed specifically for the Traffic Control Industry. This unit meets NEMA specification TS1-1983 and TS2 1998, clause 6.2. Each switch will turn its rated load ON or OFF within 10 deg. of the first zero cross-over point & within 5 deg. on succeeding alterations randomly timed input command signal. The electronics are enclosed in a dust resistant, metal enclosure providing mechanical protection and excellent heat sinking for the heat generating components in the circuit. The electronic components are easily accessible by removing the cover with a screwdriver.