Design Improvements for the Zenith 601 HDS:
Power Supply for Bose Headsets
Power Supply for Bose Headsets
Bose headsets have doubled the joy of flying. They reduce the noise
so drastically that it is quieter than in a commercial jet.
Conversation with copilot and radio communications
are crystal clear. We have the version requiring a 9 Volt
battery, which lasts maybe 20 hours. This is not long, and it is not
nice if the battery fails in flight. Instead, we use a
12VDC-9VDC converter to reduce the 12-14V produced by the alternator
to about 9.4V. Thus,no battery is needed.
The converter is powered up when the Avionics switch is turned.
This avoids voltage spikes for the headsets.
Of course, we could have bought the Bose headsets
with special plugs for
plane-supplied power. But those sets cannot be used in other airplanes
unless the unusual Bose receptacle has been installed. By our
arrangement, the headsets can be used in other airplanes by
simply inserting 9 Volt batteries and using the conventional
headset connectors.