PV Gap

Terrence Said:

Where can I find solutions manual? Help!!!?

We Answered:

Information is below.

Warren Said:

question about digital systems?

We Answered:

let's look at a typical parking voucher dispenser, as seen in Toronto. its back-lit, LCD screen displays time of day and amount of money; and it accepts coins or cards, and prints vouchers.

during the day, this thing works on photovoltaic cells. but it keeps working until well-after dark, (up to 9 or 11pm when parking becomes free, and still keeps its clock running until morning.) To do this, it must store excess energy from the photovoltaic cells during daylight, and draw that later. There are two strategies it might use: capacitors, or rechargeable battery.

which would you use, and why?

Stephanie Said:

Who here twitters? Is Joeinc a good user name?

We Answered:

? Yeah, sure