Re: Looking to buy HP6268B 40V 30A Power Supply
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How's things Denis? ? 73, Mike, Mike Stevens, G8CUL/M0CUL/F4VRB. ?
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From: [email protected] On Behalf Of sigma01@... via groups.io
Sent: 28 October 2021 16:28
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] Looking to buy HP6268B 40V 30A Power Supply? I have four of the 20V 20A versions.? The Humming/Buzzing I think is mainly due to the Thyristor Pre Regulator in these PSUs.? This maintains the input to the Linear Regulator to just a bit more than the drop out so little heat is generated in the Pass Transistors.?
Denis
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