process where the excess copper is removed to leave the individual tracks or traces as they are sometimes called

factor to be consider in PCB designing when Too much heat is the number one problem of all components. Bigger space is needed so that heat sink can be provided to component. This will protect the component from burning up.

in designing PCB it should must be big enough for the entire component to be mounted where it is anticipated

A conductor where the component’s terminal lead is soldered also called solder side

which of the characteristic of good designing include this It should be clean so that the representation of the schematic diagram is easy to mark and troubleshoot the PCB.

a liquid chemical used to remove substrate/copper in PCB

PPE To be worn for prevention of accidental spill of chemical over your clothes.

is a connecting method in which metals to be soldered are first heated up to the temperature can melt and then joined each other with supplied solder between them. An alloy layer is formed between soldering material and metal surface

It is a substance applied to facilitate flowing and to prevent formation of oxides. It is also found inside or at the inner portion of the solder wire.

refer to the Environmental Protection Agency has determined a three tiered approach for managing solid waste. Each of these should be practiced to reduce the amount material headed for final disposal

THE 3 R'S OF SOLID WASTE mean the best way to manage solid waste.Don't create waste in the first place! Buy only what you need. Use all that you buy. Avoid heavily packaged products. Avoid disposable items like paper plates and plastic silverware. Buy the largest size package for those items that you use are often

THE 3 R'S OF SOLID WASTE mean is the better way to manage solid waste use them over and over until they are completely worn out. Lunch bags can be brought home and used for many more lunches. Borrow or share items you don't use very often.

THE 3 R'S OF SOLID WASTE is the good way to manage solid waste.Recycle means taking something old and making it into something new. In Seminole County, all residents who live in a single family home can recycle right in front of their house

Only one diode is needed to conduct on one alternation of every cycle of the ac input

This circuit uses four diodes in two pairs. The bridges circuit makes it possible to eliminate the center tap.

Connect the correct way round. Transistor have 3 “ legs”(leads) so extra care is needed to ensure the connections are correct. Easily damaged by heat

It has no moving parts. It looks like wick used in oil lamps, except that it is made of copper. To use it, you put the wick over the joint and heat it.

Another terminologies for power supply, sometimes called is a circuit compose of three major components; the power transformer, rectifiers (diodes), and filter capacitors

AC Plug with Cord used for connecting the 220V input voltage of the power supply

Auxiliary Components of Power Supply It is used to connect the two-line output to the load. Red clip for positive.Black clip for negative

Auxiliary Components of Power Supplyused to select the output voltage of the power supply, from 3V to 12V DC

the function of sponge is To clean the tip of soldering iron. Removal of flux remainder and old solder.

component that Indicates current flow in the circuit.

component that can Steps down the AC voltage from 220V to 3VAC to 12VAC.