I’ve accumulated a lot of “specialty” boxes for all the electronics in my life. I’ve got mp3, gps, computer, cell phone, components, and wireless device boxes for all the electronics I have and I generally try and keep them. I’m about to move and I’d like to get rid of them but I worry I may need them to send in or something like that. Any thoughts?

For practical and personal project purposes. I wouldn’t even spend money on a college class for this until I was sure I could pass it first, you see.

question:

Electives such as electronics, automative and horticulture should be equally accessible to male and female students. However, it is noticable that large numbers of girls have less interest in these subjects. girls are narrowing gender gap in science and math, but not in technology.

we are required to adress the genderissue in technology education.you need to discuss the following:

1)what evidence is there that a technology gender gap and gender bias exist?

2) why are girls in there adolescent years losing interest in technology?

3)what are the differnce and similarities between how males and females perceive and use technology?

Block diagrams are used to understand (and design) complete circuits by breaking them down into smaller sections or blocks. Each block performs a particular function and the block diagram shows how they are connected together. No attempt is made to show the components used within a block, only the inputs and outputs are shown. This way of looking at circuits is called the systems approach.

Power supply (or battery) connections are usually not shown on block diagrams.

source: http://www.kpsec.freeuk.com/study.htm

This is the block diagram of the most of regulated power supply.

Notes:

• Transformer – steps down 230V AC mains to low voltage AC.
• Rectifier – converts AC to DC, but the DC output is varying.
• Smoothing – smooth the DC from varying greatly to a small ripple.
• Regulator – eliminates ripple by setting DC output to a fixed voltage.