Input is cut by C. Monitoring the waveform of pin 1 of the uPD9622, it appears as if the bias voltage is stable at the GND level
and the bias is applied normally, but is it OK to go ahead with use under such conditions?
A1
No, the fact that the operation is normal is just a lucky coincidence.
No bias potential is supplied from external for the input pins of the uPD9622.
Therefore, even though the operation when you tried was normal this time, problems will occur, and thus usage applying an appropriate bias is required.
SITE MAP
