24VDC XLR Battery Operated Power Supply Performance: The PS3 provides the facilities necessary to power your cabled intercom system from batteries. Typically, a pair of 12V batteries are wired in series to provide 24V, then connected to the PS3. Best because of size, weight, and recharge-ability, are computer UPS or motorcycle batteries, but auto or even lantern batteries may be used. Time between recharging will depend upon the num- ber of stations connected, but as an example, a pair of 150 Ampere/Hour batteries would power ten belt packs, with their signal lights constantly On, for over 1000 hours. The front panel contains a pair of binding posts for attachment of the batteries, and a high-quality cir- cuit breaker which acts as the On/Off switch and limits the current which may be drawn by the system from the batteries to a safe 1.0 Amp. Although the binding posts are colored red and black, an internal circuit corrects reverse polarity. The rear panel contains three 3-pin male XLR-type connectors, wired in parallel, for connecting belt packs or other stations to the system.The PS3 provides the nec- essary termination circuit for the audio line, to maintain stability as stations are added or removed from the system. Durability: The ribbed, extruded aluminum case; glass-filled nylon end bezels; internal support sys- tem for the PC board; best-quality XLR-type connectors, and; recessed controls, all contribute to the outstanding ability of the PS3 to withstand rough usage. Value: The comparatively low price of the PS3 is made possible by the minimized assembly cost re- sulting from simplicity of construction. Simple construction also affords the use of higher quality com- ponents, and increases the ease (thus lowering the cost) of servicing. Compatibility: The PS3 is plug-in compatible with Clear-Com and other popular headset intercom systems. Specifications: Power requirement: 12~24 VDC from batteries Power output: 1.0 Amp maximum, 30V peak, smoothed (ripple free) Audio bridging impedance: 200 ohms unbalanced. Dimensions: 3.70 x 4.30 x 2.50 in. (93.98 x 109.22 x 63.5 mm.) Weight: 14.5 oz (0.411 Kg.) Batteries are NOT provided.
