[Elecraft] K1 DC voltage check
Mark Petrovic
mspetrovic at gmail.com
Sat Feb 27 15:12:55 EST 2016
Thank you, Don.
What does drastically mean in this context?
> On Feb 27, 2016, at 11:59 AM, Don Wilhelm <w3fpr at embarqmail.com> wrote:
>
> Mark,
>
> You are effectively reading the voltage drop across D16.
> That 600mV drop across D16 will not drastically affect the operation of the K1.
> If you would like a bit higher voltage on the PA transistor, you can increase the voltage of your power supply a bit (the K1 upper voltage spec is 15 volts). If you are running on batteries, it will make a little difference.
> If you would like a lower voltage drop across D16, replace it with a 95SQ015 which is available from Elecraft as p/n E560009 (it is used in the K2 as the series reverse voltage protection diode.
>
> 73,
> Don W3FPR
>
>> On 2/27/2016 2:32 PM, Mark Petrovic wrote:
>> I'm performing the DC voltage checks (page 30 of the instructions), which occur immediately after installing the power switch on the RF board.
>>
>> P1 pin 16 is supposed to be supply minus 300mV, but I get 600mV. Is this a cause for concern?
>
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