Kinds of switch, Radio Spare Part, Circuit or Wiring Connection

Type of Switch

1. Single pole, Single throw (spst) -

A simple on-

off switch.

This type can

be used to

switch the

power supply to a circuit. When used

with mains

electricity this

type of switch

must be in the

live wire, but it is better to use

a DPST switch

to isolate both

live and

neutral.

2. Single pole, double throw (spdt)-

ON-ON

Single Pole,

Double Throw

= SPDT This switch can

be on in both

positions,

switching on a

separate device

in each case. It is often called

a changeover switch. For example, a

SPDT switch

can be used to

switch on a red

lamp in one

position and a green lamp in

the other

position. A SPDT toggle

switch may be

used as a

simple on-off

switch by

connecting to COM and one

of the A or B

terminals

shown in the

diagram. A and

B are interchangeable

so switches are

usually not

labelled. ON-OFF-ON

SPDT Centre

Off A special

version of the

standard SPDT

switch. It has a

third switching

position in the centre which is

off. Momentary

(ON)-OFF-(ON)

versions are

also available

where the switch returns

to the central

off position

when released.

3. Double pole, single throw (dpst) -

Dual ON-OFF

Double Pole,

Single Throw =

DPST A pair of on-

off switches

which operate

together

(shown by the

dotted line in the circuit

symbol). A DPST switch

is often used

to switch mains

electricity

because it can

isolate both the live and

neutral

connections.

4. Double pole, Double throw (dpdt) -

Dual ON-ON

Double Pole,

Double Throw

= DPDT A pair of on-

on switches

which operate

together

(shown by the

dotted line in the circuit

symbol). A DPDT switch

can be wired

up as a reversing

switch for a motor as

shown in the

diagram. ON-OFF-ON

DPDT Centre

Off A special

version of the

standard SPDT

switch. It has a

third switching

position in the centre which is

off. This can

be very useful

for motor

control

because you have forward,

off and reverse

positions.

Momentary

(ON)-OFF-(ON)

versions are also available

where the

switch returns

to the central

off position

when released.

Ampere = Horsepower

10A - 1 hp

15A - 1.5 hp

20A - 2 hp

30A - 3 hp

10A - 746 watt

15A - 1119 watt

20A - 1492 watt

30A - 2238 watt

60A - 4476 watt

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 Function of the Radio Spare Part
1. Antenna - received of frequency modulation
Nakakatanggap sya ng F.M. (frequency modulation) band sa megaherts MHZ. Yung mga kanta sa love radio na station.
2. Antenna Coil - received amplitude modulation - A.M. band.
Radyo naman ito, na mapapakinggan natin ang balita sa KHZ kiloherts.
3. Oscillator Coil - to make the signal 100% clear.
4. I.F. Transformer - to make the signal 99% clear.
5. Interstage Transformer - to make a signal 99% sound clear (booster amplifier)
6. Resistor - ability to control, limit the flow of current.
7. Capacitor - ability to store electrical charge or voltage.
Nagstore daw or naiipon ang kuryente sa kanya, para mapaandar ang isang bagay na kailangan ng mataas na kuryente.
Meron namang capacitor na ang trabaho ay ang mag filter ng kuryente para maging malinis ang daloy ng kuryente mula sa rectifier diode. Para maging smooth ang ripple o pulsating na DC.
8. Variable Capacitor - station selector switch.
Eto yung pinipìhit natin kung anong station ng radyo ang gusto mong pakinggan. Kung love radio or campus radio ka makikinig.
9. Speaker - convert electrical energy ito sound.
Ang signal ng kuryente ay ginagawa nyang tunog. Pwede din ito pagbaliktarin, at gawing Microphone, na ang tunog ay gagawing electrical energy.
10. Microphone - convert sound to electrical energy.
11. Diode - to rectify or detect the signal.
Diodes allow electricity to flow in
only one direction. The arrow of
the circuit symbol shows the
direction in which the current can
flow. Diodes are the electrical
version of a valve and early diodes were actually called valves.
Ito ay para mapadaan ang kuryente sa isang direction lamang. At may tanda o arrow sya para malaman kung ano ang direction lamang. Kung ang + posive halimbawa ay pakanan ang daan, kanan lamang ang daan nya, hindi sya makakadaan pakaliwa, dahil pipigilan sya ng diode. Isang direction laman.
May rectifier diode naman na ang trabaho ay gawing D.C. ang A.C.
12. Transistor - to enlarge and extend the signal (amplify)
Para lumakas ang mahinang signal. Kaya may tinatawag na amplifier na ang mahinang tunog ay maging malakas pero maganda pa din ang tunog.

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 Circuit or Wiring Connection
Electrical Prayer

From line one to switch, switch to lamp, lamp to another line.

Series Connection

Parallel Connection

3 way at 4 way switch, gamit ito para makontrol ang ilaw sa ibaw lugar.

3 way connection

4 way switch connection

Credit:
http://www.electrical-online.com/basic-4-way-switch-wiring/
http://www.ezdiyelectricity.com/?page_id=381