[Elecraft] K1: DC Voltage Check Slightly Off

2008-01-08 Thread MGFoster
I've reached the first DC Voltage Check in the RF Board assembly and for the AF amplifier (LM386N-1, component U3) pin 5 check the Voltage should be between 3.8V and 4.2V. My DMM measured 3.786V. Is this significant, or should I just round up to 3.8V? All other voltage check points were

Re: [Elecraft] K1: DC Voltage Check Slightly Off

2008-01-08 Thread Don Wilhelm
Yes, you should round up to 3.8 volts. There will be some variability due to DMM differences, and some further variability due to component tolerances. When a value like 3.8 is specified, rounding to one significant digit is what is intended. Most of the values listed in the DC voltage