A output driver architecture is proposed that uses thin gate-oxide core and thin gate-oxide Drain-extended transistors that can directly interface with voltage supplies up to six times the normal rating of the transistor. The apparatus comprises a pair of probes fashioned to temporarily penetrate the insulation of lamp connecting wire on either side of a number of lamps thus bridging such lamps either directly or via a current limiting means. A second satellite signal is received and a second pointing error signal is extracted from the tracking feed based on the second satellite signal. The first valve chamber is communicated with an inlet channel, the second valve chamber has a valve seat corresponding to the valve member, and the valve seat divides the chamber into a bottom valve chamber communicating with the first valve chamber through a communication hole formed in the first diaphragm and a top valve chamber communicating with an outlet channel.