Blog Archive

Wednesday, 20 April 2011

LIST OF UNIVERSAL REMOTE CODES රිමොට් කොඩ්


ABEX
CODE: 0032

ADMIRAL CODES: 0093

ADVENTURA CODE: 0046

AIKO CODE: 0092

AIWA CODES: 195/ 196

AKAI CODES: 002/ 0030

ALLEGRO: 0720/ 0774

ALLERON CODSE: 046/ 0179

A-MARK CODE: 0003

AMBASSADOR CODE: 0177

AMPRO CODE: 0179

AMSTRAD CODE: 189

AMTRON CODE: 053

ANAM NATIONAL CODES: 003/ 025/ 042/ 053/ 193

ANAM NATIONAL: 0055

ANAM: 0751

APEX CODE: O516

ARCHER CODES: 0003/ 020

AUDIOVOX CODES: 053/ 0180/ 0003/ 0092/ 0451

BANG & OLUFSEN CODE: 190

BAYSONIC CODE: 0180

BELCOR CODES: 004/ 0016/ 0019

BELL & HOWELL CODES: 000/ 001/ 049

BRADFORD CODE: 053

BROKSONIC CODES: 136/ 147

BROKWOOD CODE: 004

CANDLE CODES: 004/ 008/ 009/ 174

CAPEHART CODE: 175

CELEBRITY CODE: 002

CENTURION CODE: 009

CETRONIC CODE: 042

CITIZEN CODES: 001/ 004/ 008/ 009/ 042/ 053/ 058/ 105/ 109/ 177

CLAIRTONE CODE: 014

CLASSIC CODE: 042

COLORTYME CODES: 004/ 009/ 010

CONCERTO CODES: 004/ 009

CONCIERGE CODE: 121

CONTEC/CONY CODES: 012/ 013/ 014/ 042/ 053

CRAIG CODES: 042/ 053

CROWN CODES: 042/ 053

CURTIS MATHES CODES: 000/ 001/ 004/ 009/ 015/ 031/ 049/ 105/ 109

CXC CODES: 042/ 053

DAEWOO CODES: 004/ 005/ 009/ 017/ 018/ 019/ 042/ 058/ 082/ 083/ 085/ 097/ 100/ 126/ 127/ 130/ 138

DAYTRON CODES: 004/ 009

DIMENSIA CODES: 000/ 031

DUMONT CODES: 004/ 121

DYNASTY CODE: 042

ELECTROBAND CODES: 002/ 014

ELECTROHOME CODES: 003/ 004/ 009/ 022/ 133

ELEKTRA CODE: 001

EMERSON CODES: 004/ 009/ 014/ 023/ 024/ 025/ 026/ 027/ 030/ 032/ 033/ 034/ 035/ 036/ 037/ 038/ 039/ 040/ 041/ 042/ 043/ 045/ 046/ 049/ 053/ 116/ 135/ 147/ 177/ 179

ENVISION CODES: 004/ 009

FISHER CODES: 013/ 049/ 050/ 180/ 209

FUJITSU CODES: 046/ 197

FUNAI CODES: 042/ 053/ 046

FUTURETEC CODES: 042/ 053

GE CODES: 000/ 003/ 004/ 009/ 022/ 031/ 044/ 052/ 054/ 055/ 087/ 092/ 103/ 107/ 125/ 164/ 181

GIBRALTER CODES: 004/ 121

GOLDSTAR CODES: 004/ 005/ 009/ 056/ 057/ 133/ 155/ 156/ 172

GRUNDY CODES: 046/ 053

HALLMARK CODES: 004/ 009

HARVARD CODE: 053

HITACHI CODES: 001/ 004/ 009/ 013/ 059/ 061/ 079/ 088/ 091/ 137/ 139/ 140/ 141/ 142/ 143/ 144/ 145/ 146/ 179/ 210

IMA CODE: 053

INFINITY CODE: 062

INTEQ CODE: 121

JANEIL CODE: 174

JBL CODE: 062

JC PENNY CODES: 000/ 004/ 005/ 008/ 009/ 022/ 031/ 052/ 054/ 055/ 063/ 087/ 105/ 107/ 109/ 172/ 181

JCB CODE: 002

JENSEN CODES: 004/ 009

JVC CODES: 013/ 054/ 055/ 060/ 065/ 067/ 089

KAWASHO CODES: 002/ 004/ 009

KAYPANI CODE: 175

KEC CODE: 042

KENWOOD CODES: 004/ 009/ 133

KLOSS NOVABEAM CODES: 068/ 069/ 174

KONKA CODES: 016/ 047/ 066/ 157/ 158/ 176

KTV CODES: 014/ 021/ 042/ 053/ 070/ 116/ 177

LODGENET CODES: 000/ 001

LOGIK CODES: 000/ 001

LUXMAN CODES: 004/ 009

LXI CODES: 000/ 004/ 009/ 031/ 049/ 062/ 107/ 109/ 181

MAGNAVOX CODES: 004/ 008/ 009/ 062/ 068/ 069/ 074/ 075/ 076/ 077/ 089/ 133/ 163/ 165

MAJESTIC CODES: 000/ 001

MARANTZ CODES: 004/ 009/ 062

MEGATRON CODES: 004/ 009/ 059

MEI CODE: 014

MEMOREX CODES: 000/ 001/ 004/ 009/ 046/ 049/ 051/ 135


MGA CODES: 004/ 005/ 009/ 022/ 046/ 133/ 180
MIDLAND CODES: 054/ 055/ 107/ 121/ 172/ 181

MINUTZ CODE: 052

MITSUBISHI CODES: 004/ 005/ 009/ 022/ 046/ 081/ 089/ 132/ 133/ 180

MONTGOMERY WARD CODES: 000/ 001

MOTOROLA CODES: 003/ 173

MTC CODES: 004/ 005/ 009/ 014/ 105/ 109

MULTITECH CODE: 053

MULTIVISION CODE: 084

NAD CODES: 004/ 009/ 109/ 185

NEC CODES: 003 004 005 009 010 085 089 095

NIKEI CODE: 042

NIKKO CODES: 004/ 009/ 058

NTC CODE: 058

ONKING CODE: 042

ONWA CODES: 042/ 053

OPTIMUS CODES: 170/ 185

OPTONICA CODES: 095/ 173

ORION CODES: 035/ 121/ 135

PANASONIC CODES: 003/ 054/ 055/ 062/ 070/ 148/ 149/ 170/ 171

PHILCO CODES: 003/ 004/ 005/ 008/ 009/ 062/ 068/ 069/ 074/ 075/ 077/ 133

PHILIPS CODES: 003/ 004/ 006/ 008/ 062/ 068/ 069/ 074/ 075/ 076/ 086/ 087/ 089/ 133/ 163/ 183/ 184/ 205/ 206/ 207/ 208/ 212/ 213

PHILIPS/MAGNAVOX CODES: 183/ 184/ 208/ 213

PILOT CODE: 004

PIONEER CODES: 004/ 009/ 090/ 179/ 185

PORTLAND CODES: 004/ 005/ 009/ 058

PRECISION CODE: 166

PRICE CLUB CODE: 105

PRISM CODE: 055

PROSCAN CODES: 000/ 031/ 107/ 181

PROTON CODES: 004/ 009/ 093/ 175/ 186/ 192

PULSAR CODE: 121

PULSER CODE: 004

QUASAR CODES: 003/ 054/ 055/ 062/ 070/ 148/ 149/ 170/ 171

RADIO SHACK CODES: 000/ 004/ 009/ 031/ 041/ 042/ 048/ 049/ 053/ 095/ 133/ 155/ 170/ 172/ 194

RCA CODES: 000/ 003/ 004/ 005/ 007/ 009/ 011/ 048/ 078/ 082/ 083/ 094/ 096/ 098/ 099/ 101/ 102/ 103/ 107/ 113/ 129/ 133/ 167/ 179/ 181/ 187/ 188/ 194

REALISTIC CODES: 000/ 004/ 009/ 031/ 041/ 042/ 048/ 049/ 053/ 095/ 133/ 155/ 170/ 172

RHAPSODY CODE: 014

RUNCO CODE: 121

SAMPO CODES: 004/ 009/ 172/ 175

SAMSUNG CODES: 004/ 005/ 009/ 015/ 104/ 105/ 106/ 109/ 133/ 172

SAMSUX CODE: 009

SANSUI CODES: 135/ 136

SANYO CODES: 004/ 013/ 049/ 108/ 110/ 180/ 209

SCOTCH CODES: 004/ 009

SCOTT CODES: 004/ 009/ 024/ 035/ 042/ 046/ 053

SEARS CODES: 000/ 004/ 009/ 013/ 031/ 046/ 049/ 105/ 107/ 109/ 110/ 133/ 180/ 181/ 189

SHARP CODES: 004/ 009/ 079/ 095/ 111/ 112/ 114/ 122/ 123/ 124/ 173

SHOGUN CODE: 004

SIGNATURE CODES: 000/ 001/ 023

SIMPSON CODE: 008

SONIC CODE: 014

SONY CODES: 002/ 006/ 071/ 128

SOUNDESIGN CODES: 004/ 008/ 009/ 042/ 053/ 046

SPECTRAVISION CODE: 203

SQUAREVIEW CODE: 189

SSS CODES: 004/ 042/ 053

STARLITE CODE: 053

SUPREMACY CODE: 174

SUPREME CODE: 002

SYLVANIA CODES: 004/ 008/ 009/ 062/ 068/ 069/ 074/ 075/ 076/ 077/ 133/ 161/ 163

SYMPHONIC CODES: 033/ 053/ 189

TANDY CODE: 173

TATUNG CODE: 003

TECHNICS CODES: 054/ 055

TECHWOOD CODES: 004/ 009/ 054/ 055

TEKNIKA CODES: 000/ 001/ 004/ 005/ 008/ 009/ 013/ 042/ 046/ 053/ 058/ 076/ 105/ 109/ 170/ 174

TELECAPTION CODE: 117

TELERENT CODES: 000/ 001

TERA CODES: 004/ 186

THOMSON CODES: 065/ 0771/ 137 /224/ 226/ 233/ 315/ 327/ 361/ 363/ 371/ 377/ 427/ 49 / 518/ 588/ 596/ 653

TOSHIBA CODES: 013/ 049/ 089/ 105/ 109/ 117/ 118/ 120/ 159/ 178

UNIVERSAL CODES: 052/ 087

VICTOR CODE: 079

VIDTECH CODES: 004/ 005/ 009

VIKING CODE: 174

WARDS CODES: 000/ 001/ 004/ 005/ 009/ 024/ 031/ 033/ 046/ 052/ 062/ 068/ 069/ 074/ 075/ 076/ 087/ 095/ 119/ 133

WHITE WESTINGHOUSE CODES: 097/ 100

YAMAHA CODES: 004/ 005/ 009/ 133

ZENITH CODES: 000/ 001/ 004/ 023/ 038/ 058/ 059/ 064/ 121/ 135/ 136/ 153/ 0016/ 0017/ 0092

Wednesday, 13 April 2011

ඇනලොග් මිටරකින් ට්‍රාන්සිස්ටරයේ පින් සොයාගමුFinding Transistor pins


I got a cheap needle multimeter made from coloumbo. It costs me only 250Rs. I have been using it quite long time. The function that checks continuity helped me much for fixing many boards. One day I noticed the knob for zero adjustment could not set the needle in stable position. At first I changed the internal 1.5Vx2 battery, but the problem still exist. I noticed when I press the knob, sometime, the needle was fluctuate. Finally I found Carbon film of the POT may wear out, so after I changed a new POT, 10k, it worked very well. I saw my shelf and looked at small signal transistors. I thought I like to make a page that explains how to use the needle multimeter to find pins of the transistor. This led me to spent my year-end week to prepare this page. I hope it will be useful for young hobbyists to learn using needle meter. By the way I like to tell you one more thing, I am so happy using draw program that comes with openoffice by Sun Microsystems. It works like MACDraw, particularly the freehand tool. The truth is the latter was the main reason why I prepared this page because I like drawing picture. When I was a chid I was very happy drawing picture with 2B pencil.

The needle multimeter when set the knob to resistance measurement, the black cable will provide potential +V respect to red cable. Suppose your meter uses 1.5Vx2, the potential different across both cables will approx. +3V. We can use this EMF from battery to be biasing DC supply for semiconductor junctions.

Let's see with a rectifying diode 1N4001. The schematic symbol shows diode has two pins, Anode and Cathode. For real diode, it has a white color ring to indicate the pin is Cathode. When we test the diode with black cable tied to Anode pin and red cable to Cathode pin, forward biasing, we will see the resistance is changed to lower kOhms. If you swap the cable, reverse biasing, the needle will show higher resistance. We use this concept to check pins of the transistor.

Suppose we want to find pins of a 2N2222A, TO92 plastic package transistor. We must find the base pin beforehand. Let have the black cable at the fixed position. The picture shows the black cable is at center pin. Try with red cable for both sides. Suppose we try with right side. If the resistance is lower, then do not move black one. Remember position of the needle.

Change the read cable to the left side. If the needle moved right showing lower resistance the same position for right side. Then we can conclude that this transistor is NPN.

If the transistor is PNP, then we must fix the red cable and move the black one. We will get the same result but opposite polarity.

The center pin is then base pin.

Now we know the base pin, then we will find the rest which one is collector and emitter pin.

To find the collector and emitter we must move the black cable to the left side. Let suppose the left one would be collector pin and the right would be emitter pin. The meter should show higher resistance.

Use finger touch the left pin and the center pin, if the needle moved right showing lower resistance, then the left pin will be collector and the right pin will be emitter pin.

You will notice that when release finger from center pin, the needle will move to the left.

The method can apply to PNP transistor as well, after we found the base, then similar to NPN, however just swap the cable. The red will now be collector and the black will be emitter.

We see that the equivalent structure of NPN transistor made with NPN junction. It likes two diodes with anode pin tied together. So when we have black cable (+V) tied to base pin and the red cable tied to either side, the PN junction then was forwarded biasing, lowering the resistance.

And when the black tied to collector pin and red to emitter pin, high resistance results. When we have some dc current injected to base pin (by finger). The transistor gain will multiply the base current producing higher current flow from collector to emitter.

Explanation above refers to positive charge flowing. The electron on the other hand will flow in opposite direction from emitter to collector pin!





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Sunday, 10 April 2011

TDA7265 25 +25W STEREO AMPLIFIER WITH MUTE & ST-BY

25 +25W STEREO AMPLIFIER WITH MUTE & ST-BY

WIDE SUPPLY VOLTAGE RANGE (UP TO
±25V ABS MAX.)
SPLIT SUPPLY
HIGH OUTPUT POWER
25 + 25W @THD =10%, RL = 8W, VS = +20V
NO POPAT TURN-ON/OFF
MUTE (POP FREE)
STAND-BY FEATURE (LOW Iq)
SHORT CIRCUIT PROTECTION
THERMAL OVERLOAD PROTECTION

DESCRIPTION
The TDA7265 is class AB dual Audio power amplifier
assembled in the Multiwatt package, specially
designed for high quality sound application
as Hi-Fi music centers and stereo TV sets.



Thursday, 7 April 2011

Scart





CART S-Video Connection

Output connectorInput connector
1Audio right out2Audio right in
3Audio left (or mono) out6Audio left (or mono) in
4Audio return4Audio return
15Chrominance out15Chrominance in
13Chrominance return13Chrominance return
8Video status out8Video status in
19Luminance out20Luminance in
17Luminance return18Luminance return
21Shield21Shield

SCART Composite Video Connection

Output connectorInput connector
1Audio right out2Audio right in
3Audio left (or mono) out6Audio left (or mono) in
4Audio return4Audio return
8Video status out8Video status in
19Composite video out20Composite video in
17Composite video return18Composite video return
21Shield21Shield