“FlexReg” PLR5W Quickstart Guide
Copyright 2006 – 2017 Tech-Aero Designs LLC
www.tech-aero.net
Thank you for purchasing the Tech-Aero FlexReg PLR5W. The PLR5W
provides up/down
programmable output of 32 voltage settings within each of two jumper selectable voltage ranges,
supporting standard, High Voltage (HV) or Wide Voltage (WV) servo voltage requirements.
The factory
setting is 6.20V +/- .01V, which can be changed with a simple procedure using a voltmeter and a small
screwdriver or similar electrically conductive, small hand tool.
To start with, select a suitable battery that has adequate capacity for your application. The PLR5W can
operate in “standard” servo voltage ranges with a 2S LiPO, a 2S LiFe or a 5S NiCad or NiMh battery pack.
For operation with HV or WV servos, a 2S LiPo is recommended. Simply plug the Rx Power connector into
the battery power connection or spare servo connection such as an auxiliary channel on your receiver and
plug the battery into the Battery Connector to the flight pack battery. Power to the receiver is controlled by
the PLR5W ON/OFF switch.
Figure 1
Referring to Figure 1, the Voltage Select Jumper lets you pick the voltage range for “standard” servos,
i.e. those that would typically be used for HV servos. WV servos can operate throughout both ranges, but
would typically be set to take advantage of the higher voltage range that is available. Remove the jumper for
standard voltage servos, providing a 32 programmable selections from 5.75V to 6.65V. Install the jumper
for 32 programmable selections from 6.68V to 7.75V.
The procedure to program the PLR5W for any of the 32 separate points is to first connect the Rx Power
connector to a DC voltmeter. For accurate results, there should be minimal to no load on the regulator while
performing the programming task. Referring to Figure 1, note the location of the 3 pin Voltage
Programming Port. With a small screwdriver or similar small metallic instrument, briefly making contact
