Hello off late I have been working on a "Front Display Key" unit. When I scoped the power to the key using a oscillator I found that it two types of supply unit. both ranged 3.3V but the difference was that 1 was a proper constant 3.3V supply and the other was a pulsating 3.3V supply.
How is advisable to pulsate a DC supply and how different are these leaving alone the fact the pulsating part both range 3.3V only how can we differentiate them.
Awaiting for your response
Best regards
Yeshwanth