Adjustable HV high voltage supply module for geiger tube counter and dosimeter

IMEX-38-56-1 is an adjustable high voltage generator module for Geiger-Müller  tubes.  The module is for use in geiger counters and dosimeters where portability, small size, very low power consumption and stability is required.  Specifications: Supply voltage range: 2.5-5.5V   High voltage range:   380 to 560V (adjustable with a 24 turn trimmer potentiometer). Practically all popular western and russian-made Geiger-Müller tubes are supported. Current limiting 4M7 resistor is already installed (for most Geiger-Müller tubes of russian origin). Additional separate 0.125W 4.7M resistor is provided with the module for tubes of western origin. Low quiescent (standby) current:  0.5-10μA   Low ripple: 1 to 5V Working temperatures: -20 to +60ºС Three pin module: pin 1 HV, pin 2 GND, pin3 positive input voltage Dimensions: 38.5mm x 7mm x 25mm Module is encapsulated for isolation purpose in transparent epoxy. You can obtain this device on eBay - please check THIS eBay LINK . Alternatively please contact me by e-mail: