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Saturday, January 18, 2014

THREE TERMINAL VOLTAGE REGULATOR

These voltage regulators are monolithic integrated circuits designed as
fixed–voltage regulators for a wide variety of applications including local,
on–card regulation. These regulators employ internal current limiting,
thermal shutdown, and safe–area compensation. With adequate heatsinking
they can deliver output currents in excess of 1.0 A. Although designed
primarily as a fixed voltage regulator, these devices can be used with
external components to obtain adjustable voltages and currents.
• Output Current in Excess of 1.0 A
• No External Components Required
• Internal Thermal Overload Protection
• Internal Short Circuit Current Limiting
• Output Transistor Safe–Area Compensation
• Output Voltage Offered in 2% and 4% Tolerance
• Available in Surface Mount D2PAK and Standard 3–Lead Transistor
Packages

BASIC ELECTRONICS REGULATED POWER SUPPLIES



Unfortunately our hobby circuit work on different voltages and a power supply with single voltage will not be sufficient. Simplest way would be to buy a multi-tapped transformer and connect the voltage taps with a suitable switch. These transformers are available with taps of 1.5, 3, 4.5, 6, 9, 12v. We need a single multi throw switch ( as many throws as there are taps). With 9-6-0-6-9 transformer and with a double pole double throw switch, you can get 6 and 9V dc. With the same transformer , and with a double pole double throw switch it is possible to get 3, 6, 9, 12, 15, 18V. Switches and multi – taped transformers are difficult to procure; cumbersome and even unavailable at some places.
Such schematics are not shown here as there are better way to build circuits to get variable voltages. Also these power supplies suffer from a major draw back ; poor valtage regulation, voltage fluctuations.
A12V power supply shown in schematic 3 may show as much as 16.8V without load and it may go down to less than 12V as the load current is increased. This still can be and is safely circuits, we will user them for the pleasure and ease of using them and build regulated power supply as a starter.
We have some wonderful devices in three terminal regulators, just three terminals, IN- GROUND – OUT                                                          


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BASIC ELECTRONICS IC

INTIGRATED CIRCUIT ( IC )
Intigrated Circuit actually consist of a number of active electronic components such as transistors and diodes along with other passive components such as resistors and capacitors interconnected as a single unit on semi conducting wafer usually silicon. Integrated circuits are classified as analog, digital and mixed signal (both analog and digital on the same chip).


Saturday, January 11, 2014

SANSUI FURATTO -21 SERVICE DATA

A complete parts list of SANSUI FURATTO -21. With circuit diagram ,
service code, system ic, croma ic, memory ic, power, smps transformer, eht,
horizontal output , horizontal oscillator coil, vertical ic, audio ic, tunner,
Remote, service mode and many more....

SERVICE MODE DATA

MODEL NO- SANSUI FURATTO -21
SYSTEM IC NO - 8823CPNG4PB8


AGL 40 D-DRIVE 60
ABL 3 G-DRIVE 55
YPL 0 OSDV 18
BST 0 OSDH 7
ASSH 70 VSD 0
OSDA 7 TIF 3
OSDL 3 BCD 95
SSHR 7 GDC 100
SNCL 1 RDC 101
STIN 2 SC 1
S-COL 15 HSH 8
S-BRT 8 VSH 1
S-CON 10 VA 26
WIDE 10 VL 15
ZOOM 0 AGC 4

ONIDA PROMISE 14

A complete parts list of ONIDA PROMISE 14. With circuit diagram , service code, system ic, croma ic, memory ic, power, smps transformer, eht, horizontal output , horizontal oscillator coil, vertical ic, audio ic, tunner, Remote, service mode and many more....







MODEL







ONIDA PROMISE 14
SYSTEM M37220M3-201-SP
MEMORY 24C08
CROMA M52771ASP
VERT LA7840
AUDIO TDA2614
EHT EF 22445M
REMOTE
SERVICE VSM + DIS (RC



PAGE-1
WHITE BLACK 0 DT-NTSC 5
BFP 0 DT SECAM 55
BGPSW 1 DT PAL 5
VIDEO GAIN 5 CV 1
N3.58 0 HR 1
SECAM 0 FTRAP 0
D.K.K1 1 D TRAP 0
1 1 VCO 7F
BGPSW 1 RF AGC 56
AV-SHARP OFF H CENTER 60 2
AV TINT OFF H CENTER 50 7
DT-B/W 5 VER-POS 3














































PAGE-2
ZOOM SIZE 41
VER SIZE 26
SUB TINT 1F
SUB BRI 50
SUB COL 40
SUB CON 4
B DIRVE 31
R DRIVE 39
B CUT BA
G CUT 8E
R CUT 9A


LG -MODEL NO- RF -21 FC80E SERVICE DATA

A complete parts list of LG -MODEL NO- RF -21 FC80E . With circuit diagram , service code, system ic, croma ic, memory ic, power, smps transformer, eht, horizontal output , horizontal oscillator coil, vertical ic, audio ic, tunner, Remote, service mode and many more....

SERVICE   DATA  OF  LG   RF  21  SERVICE MODE DATA

MODEL LG RF -21 FC80E
SYSTEM TDA-9381/PS/N2/3/0955
AUDIO TDA7279
TUNNER TEC E949PG35L
EHT SALORA-6174V-6006V-8A29A
AUDIO PROC TDA 9859


PAGE-1
AGC 31 VS 30
RG 31 HS 30
GG 31 SC 21
BG 31 SHOOT 1
BLO-R 31 NP 83
BLO-G 31 SP 34
CDL 12 SC1-V 60
L-DLY 4 SC2-V 60
AV-AGC 6 PLL-5 26
PEAK 8 FMWS 1
VL 32 PSNS 1
VA 21 WFR 0

PAGE-2
CMUTE 1 ACMS 1
DVD 0 T-SCH 1
2IN1 0 T-PIS 1
TOP 0 CURVE 0
SCART 1 HOTEL 0
TBS 0 2ND IF 0
EYE 0 SYS 1
4KEY 0 OSD-L 1
MONO 0 TXL-L 0
BCF 0 TBL-ON 3
GAME 1 M-VOL 100
200PR 0 ON-PR 0
CH+AV 0 MSG
DUAL 0

GREEN
VOL 100
BAL 50
RED
CON 25
BRI 50
COL 50
SHA 50
TIN 50





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