Kanga Products Bassinet, Руководство пользователя и инструкция пользователя

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Rooster CW Transceiver Rev3 Page 6 of 26 22
nd
Nov 2023
Testing your work
Ok we have only fitted one part but that will allow us to do some basic testing on the board.
We can test the voltage regulator and DC distribution now.
I suggest using a current limited supply if you have one and monitor the current the board
draws.
For all the following test I have used a 12v DC supply.
Apply 12v to the board via a suitable power lead (Centre pin positive) to the DC input socket
of the board (2.1mm plug needed)
The current consumption should be just a few milliamps, the overall finished receiver will be
around 20-25mA when complete.
On the front edge of the board you will see
the position for the RIT control (labelled
Tune). Use a DC Volt meter to measure the
voltage across the two outer pads for this
control. You will see about 1 volt less than
the supply voltage so approx. 11v with a 12v
supply.
Next we can check that the voltage regulator is
working correctly.
Check the voltage on position for U2 (that will
be the mixer chip NE612).
Measure across Pin3 (0v) a Pin 8 (+V).
You should see 8V.
That completed the first stage and the first
tests.
Take the same care with each of the following stages.