| 摘要 |
A light-weight, portable power pack for supplying a high voltage output to an electrostatic spray gun from a low voltage input is disclosed. The power pack is mounted on and forms a part of the spray gun and is detachable therefrom for replacement purposes. The power pack comprises a voltage multiplier circuit for converting a low voltage DC to a high voltage DC for induction charging of material discharged from the spray gun, the circuit being encapsulated in an epoxy resin material to provide a suitable mounting case therefor. The case is molded into a suitable shape and is attached, in one embodiment, to the bottom portion of the barrel of the gun by means of screws, bolts or the like, the power pack being provided with external contacts which serve to engage corresponding contacts on the spray gun to provide electical contact through the gun to the power source, which may be a battery pack carried by the operator, and to the inductive charging device for the spray gun. In another embodiment, the power pack may be mounted upon a detachable accessory such as a gas shroud forming chamber which is in turn mountable on the forward end portion of the spray gun barrel.
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