Check the listing for details. NEW Dytran 4115B Current Source Power Unit AC/DC Coupling, Adjustable, Switching. Condition: New – Open box. Listed at 250.00 USD. NEW Dytran 4115B Current Source Power Unit AC/DC Coupling, Adjustable, Switching The Dytran 4115B is a current source power unit. Firstly, it contains an AC/DC coupling mode selector switch for situations where DC coupling is not advisable. Such as in thermally unstable environments. Secondly, a monitor switch allows the monitoring of the sensor bias voltage or the output voltage level of the 4115B with a front panel mounted volt meter. The output voltage when in DC coupling mode can be modified to zero using the front panel 10 turn potentiometer. This voltage may be monitored by the front panel meter switching to output metering mode. Features include: *Alternative to DC coupling mode in systems with low frequency responses *AC/DC Coupling mode *Monitor Switching *Zero adjustable potentiometer New unused factory parts crib stock. FAST SHIPPING 30-day return policy Location PB