NTC For Power Supply

NTC Thermistor devices are made of a specially formulated metal oxide ceramic material which is capable of suppressing high current surges. TP type NTC devices, being of relatively high resistance, shall limit the inrush current for 1~2 seconds during which time the device decreases in resistance substantially to a point where its voltage drop is negligible. The devices are especially useful in power supplies (see FigA) because of the extremely low impedance of the capacitor being charged, of which the bridge is usually subjected to an exceedingly high current surge at turn-on point. NTC Thermistor of Inrush Current Limiting High inrush

As shown in Fig. , the current surge can be eliminated by Placing a NTC thermistor in series with a filament string. Yet, if the resistance of one NTC thermistor does not provide sufficient inrush current limiting functions for your application, two or more may be used in series or in separate legs of the supply circuit (Fig.A). Be noticed, the thermistor cannot be used in parallel since one unit will tend to conduct nearly all the current available. Thus, thermistor may be used in the AC (point A1 or A2) or the DC(point D1 or D2) locations in the circuit.(See Fig. A) The resistance of NTC thermistor is designed higher than the total resistance of filaments when the circuit is turned on. As current begins flowing, the thermistor shall immediately self-heat . Then, in 1~2 seconds, its resistance will be reduced to a minimum and become insignificant to the total resistance of a circuit. With the same concept, current surges in electric motors can be held to minimum. Fig. C shows a typical DC motor s turn on surge before and after the application of a TP type thermistor to the circuit.

 

Details From WMEC Application

 

Components Price @ Lamington Road Mumbai India

Potentiometer

Multi Turn Burns Potentiometer 5K   Rs. 100=00

ACP Preset  Rs. 9.50

PCB Mounted 16MM 5K 18=00

PCB Mounted 16MM 10K 12=00

10K Helipot Multi turn POT 100=00

100k Helipot Mutltiturn POT 100=00

10K TRIMPOT VERTICAL    6.00


Capacitor

2200/35V                                            8.40

47UF/25V                                            0.55

2.2UF/63V                                           0.55

470UF/25V                                          2.00

220UF/25V                                          1.20

DISC 0.22Uf                                        0.85

DISC 0.1uf                                           0.35

DISC Ceramic                                      0.35

2.2uF/16V SMD 1210                          2.25

4.7uF/16V SMD 1210                          2.25

10uF/16V SMD 1210                           2.50

0.1uF SMD 1206                                  0.50

470uF/450V                                         90.00

220uF/200V                                        16.00

220uF/400V DC                                   34.00

220uF/250V DC                                   19.00

100uF/450V DC                                   20.00

100/450V CAN TYPE                            28.00

220uF/450V DC                                  38.00


Hi Voltage Electrolytic Capacitor

470uF/450V DC

Height 1800 Mills, Width 1400 Mills, Pin Pitch 400 Mills

220uF/400V DC

Height 1650 Mills, Width 1000 Mills, Pin Pitch 400 Mills

220uF/250V DC

Height 1650 Mills, Width 725 Mills, Pin Pitch 300 Mills

220uF/200V DC

Height 1000 Mills, Width 900 Mills, Pin Pitch 400 Mills

100uF/400V

Height 1200 Mills, Width 725 Mills, Pin Pitch 300 Mills

47uF/400V

Height 1400 Mills, Width 650 Mills, Pin Pitch 300 Mills

220uF/160V

Height 1200 Mills, Width 650 Mills, Pin Pitch 300 Mills

470uF/100V DC

Height 1000 Mills, Width 650 Mills, Pin Pitch 300 Mills

4700uF/25V DC

Height 1000 Mills, Width 650 Mills, Pin Pitch 300 Mills

100uF/100V

Height 800 Mills, Width 500 Mills, Pin Pitch 200 Mills


Resistors

CFR 1/4 5%   Rs. 0.75 Each

MFR 1/4 1%  Rs. 1.00 Each ,0.35

CFR 1/8 5%  0.25 Each , 0.30

MINI LDR              2.50

China CFR 1/4 5%  Rs.0.05 Or 0.10

Resistor Pack 9 Pin 10K 2.00

NTC 100K   5.00

RPACK 4K7  5PIN  1.50

RPACK 4K7  9PIN  2.00

RPACK 10K  5PIN  1.50

 


Bipolar Transistor

TIP142 (TO247)     32.00

TIP127 TO220        7=00

TIP42   TO220       12.00

BC547                  1.00

BD139                  4.00

BD140                  3.75

2N2222                12.00

TIP2955               24.00

TIP3055               24.00

2N3055                32.00

MJE2955              12.00

MJE3055              12.00

 


Diode

1N4007               0.50

1N5819               0.75

3.3V ZENER         1.00

1N4148 SMD       2.00

LM336-5V          7.00

LM336-2.5V        6.50

BR34 Bridge       9.00


Special IC

PIC16F886  DIP           75.00

PIC16F886 SO28         90.00

XR2206                      75.00

MAX232                      14.00

LM386 UTC                  5.00

LM358                         6.00

LM358 SO8 SMD          5.00

CA3140                     18.00

LM741                        6.50

UM66                         7.00

TDA2006                   30.00

6N136                       16.00

6N137                       15.00

PC817                       2.00

L298                         80.00

CD4013                    9.50

74HC14 SO14           7.00

Atmega 328 QTF      100.00

LM7805                    5.00

LM7808                    6.00

LM7810                    8.00

LM78L08 TO92         5.00

LM7812                   5.00

LM1084-ADJ            65.00

LM317-ADJ DPAK SMD 6.00

LM78M05 DPAK SMD   5.00

BR34 Bridge Rectifier 9.00

 


LED

3MM RED LED         0.60

3MM GREEN LED    0.60

5MM RED LED        0.65

5MM GREEN LED     0.65


Connectors Relays

8 PIN DIP IC SOCKET                       0.65

12v GOODSKY RELAY                      28.5

lEONE 12V RELAY                           13.00

DE-SOLDER WICK                           11.00

UNITY DIGITAL MULTI METER          120.00

3MM PLASTICK WASHER 1PACK 100NOS    100.00


MY SMD COMPONENTS STOCK
1206 R
180K
1K
10E
220E
330E
470E
100E
2K2
22K
100K
4K7
10K
1E

0805 R
4K7
4E7
330E
1K
2K
220E
100E
47K
2E2
10K
470E

MOUSER ORDER STOCK

180K  1% 0805 10NOS

1K      1% 0805 10NOS

330K   1%  0805 10Nos

475K   1%  0805 10NOS

187E    1% 0805 10NOS

182K    1% 0805 10NOS

300K    1%  0805 10NOS

390K   1%   0805 10NOS

97.6K  1%   0805 10NOS

 

 

SEMI
SM4007
0.1 1206
0.1 0805
BC847

RED LED 0805
GREEN LED 1206
RED LED 1206


AUTOMATION EXHIBITION DATA

WORM GEAR MANUFACTURE,GEAR TOOL MANUFACTURE, LEADSCREWS

www.malkargears.com

Malkar Industries, Mumbai

Samir Juthani (Director)

D-260, TTC MIDC Industrial Area, Behind Akshar Building, Turbhe Naka, Turbhe

Navi Mumbai – 400705, Maharashtra, India PHONE 022 27610727

HP ELECTRONICS

HOUSE OF SEMICONDUCTORS +9892419307 , IGBT POWER MOSFETS,

GANJAWALA APARTMENT, UNIT NO 20, GROUND FLOOR BLDNG NO 2, B-WING

GANJAVALA LANE BORIWALIWEST MUMBAI 92,

PHONE 022 28919307

 

STEPPER MOTORS, DRIVES , SPINDLES

SPARK MOTORS PVT LTD

WWW.SPARKMOTORS.IN

www.sparkengineeringandautomation.com

Navi Mumbai

 

Cnc routers & plasma cutters

http://www.3dmacinfo.com/

 

MEAN WELL SMPS FOR LED BIG DEALER

STERLING SIGN SYSTEMS

PHONE 080 41142211, +91 98804 24212

 

AUTOMATION CONVEYARS PVT LTS

TRANSCON

SCANBELT

PHONE  08472259844,+91 9966273671,07738353671

 

SUNRISE SEMICONDUCTORS

DISPLAY & LCD

LAMINGTON ROAD

PHONE 022 23896674

 

SYSTEM CONTROLS

AHMEDABAD

SANYODENKI SERVO, HARMONIC DRIVE,

www.systemcontrolstspl.com

PHONE 079 26760378

 

WORM GEAR BOX

MGM VARVEL

www.mgmvarvelindia.com


tons-of-1n4148-diode-at-lamington-road-market-1 tons-of-1n4148-diode-at-lamington-road-market-2 tons-of-1n4148-diode-at-lamington-road-market-3 tons-of-1n4148-diode-at-lamington-road-market-4

Components Available @ Lamington Road

components-available-at-lamington-road-1 components-available-at-lamington-road-2 components-available-at-lamington-road-3 components-available-at-lamington-road-4 components-available-at-lamington-road-5 components-available-at-lamington-road-6 components-available-at-lamington-road-7 components-available-at-lamington-road-8 components-available-at-lamington-road-9 components-available-at-lamington-road-10 components-available-at-lamington-road-11 components-available-at-lamington-road-12 components-available-at-lamington-road-13 components-available-at-lamington-road-14 components-available-at-lamington-road-15 components-available-at-lamington-road-16 components-available-at-lamington-road-17 components-available-at-lamington-road-18


DC MOTORS & GEARS

http://formacindustries.tradeindia.com/products.html

FORMAC INDUSTRIES
DILKHUSH COMPOUND , NR TRIMURTI STUDIO, SV ROAD, DAHISAR (E),Mumbai – 400068, Maharashtra, India

CNC & Routers Parts

Nidile Bearing  120=00 INR
INA Model No HK1522 ID15Mm OD 21MM

SC20UU Ball Bearing Bush 20MM ID with Aluminum Flange 450=00 INR
SFC20,  20mm OD Chrome Rod 580=00 Per Mtr
SK20, 20mm Chrome Rod Mount Vertical SK20 150=00

BK20-C7 BALL-SCREW END SUPPORT TMT 4700=00 INR

BK20-C7 BALL-SCREW END SUPPORT MNB 2800=00 INR

BF-20 SYK 2800=00

BF-20 MNB 1500=00

Aluminum Profiles
ALUMINIUM PROFILE PBH
MPS80160  5920=00 PER/MTR
MPS8080L  2100=00 PER/MTR
MPS9090   3990=00 PER/MTR
MPS40120  2700=00 PER/MTR
MPS15120  1850=00 PER/MTR
PG40  80X160  PG80160H  5400 PER/MTR
PG40  40X40 HEAVY PG40X40H 610 PER/MTR
DIECAST BRACKET PG 40.4080  10.DCB.4080 100=00 RS PER/PC
DIE CAST BRACKET PG40  10.DCB.4040  42=00 RS. PER/PC
PG 40 HINGE 4040 PA 10.JT.4040   75=00 RS PER/PC
JOINT 4040  10.JT.4040   550=00 RS PER/PC
JOINT 4080  10.JT.4080   750=00 RS PER/PC
END CAP PG 4040H   10.EC.4040  11=00 RS PER/PC

PG40 80X80    Per Mtrs — 2200 per metr for heavy and 1800 per metr for medium
PG40 40X80    Per Mtrs— 1800 per metre for heavy and 1200 per metr for medium
PG40 40X40 4SLOTS XH  Per Mtrs — 695 per metr
PG45 90X90    Per Mtrs  — 2400 per metre
PG30 30X60    Per Mtrs — 750 per metre

DIE CAST BRACKET PG40-8080  1 Pc  – 295/pcs
DIE CAST BRACKET PG40-4080   1Pc – 100/pcs
DIE CAST BRACKET PG40-4040   1Pc – 42/pcs

 

LM Guides & AC Servo Motors

 

1. HGR 25R 3048C :8628/-

2. HGR 25R 1820C : 5152/-

3. HGR 25R 400C : 1132/-

4. HGW 25CC ZAC : 1589/- (Flange type block)

5. HGH 25CA ZAC : 1505/- (Square type block)

6. CHTMH02010 :3927/-

7. CHMH02021 : 1840/-

8. MHMD082G1U (Motor) : 17,924/- (A5 series Motor)

9. MCDKT3520CA1 (Driver) : 22,533/- (A5 series Driver)

10.MHMJ082P1U : 14,544/- (LIQI series Motor)

11. MCDJT3220 : 16,387/- (LIQI series Driver)

12. 78ZDR9-400T1 : 10,022/- (Ratio : 1:9, Make :ZD)

13. 98ZDR9-750T1 : 14,317/- (For 750w, Ratio : 1:9)

 

JDS

PLASMA CONTROLLER 38000=00

PLASMA/FLAME CONTROLLER 42500=00

JD86STH118  5900=00

DMA 860 LEAD SHINE STEPPER DRIVER 7.2A   5900=00