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tg-k4at fm transceiver

01:27 / /

tg-k4at fm transceiver

 two way radio ,walkie talkie ,transceiver ,two-way radio ,2 way radio

Description:
1-Frequency: VHF: 136-174MHz UHF: 400-470MHz 
2- Output power: 4-5W 
3- CTCSS 
4- 99 channels 
5- Voice prompt 
6- Auto battery saving function 
7-Input frequency directly by keypad 
8- Low power alarm 
9- Keypad and LCD backlight function 
0- Earphone/Microphone/Auto-charger jack

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admiral ATC-217MS1

01:20 / /

admiral ATC-217MS1

Admiral-eeprom-memory-dump

Bin eeprom memory dumps for television Admiral

download dump

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led matrix display

00:46 / /

led matrix display

This project presents us a modular matrix led display based on the ATmega48 micro-controller. The main feature of this modular matrix display is that you can reconfigure it to form an arbitrary lenght LED display. Due to the simplicity of the design, it is easy to extend the communications protocol to more than one display chain to increase the height of the display. In this project, both single and double row examples are shown

led matrix display

Download Project

MORE INFO

schematic nokia n78

00:29 / /

schematic nokia n78

Download Free PDF Nokia N78

PART 1

PART 2

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resistor color calculator

00:20 / /

resistor filetype pdf

00:13 / /

resistor filetype pdf

Resistor colour code and values chart

DOWNLOAD .resistor filetype pdf

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diodes applications

23:56 / /

diodes applications

Rectification (frequency shifting)

Half-Wave Rectification

Full-Wave Retification

Bridge Full-Wave Rectifier

Clamp

Clippers/Limiters

Limiting with ordinary diodes

Limiting with Zener diodes

Multiplier

Doubler

Tripler

Diode Logic

Mixer Circuits

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diodes 1n4007

23:45 / /

diodes 1n4007

Features 
• Diffused Junction 
• High Current Capability and Low Forw
• Surge Overload Rating to 30A Peak 
• Low Reverse Leakage Current 
• Lead Free Finish, RoHS Compliant
Mechanical Data 
• Case: DO-41  
• Case Material: Molded Plastic. UL Fla
Rating 94V-0 
• Moisture Sensitivity: Level 1 per J-ST
• Terminals: Finish - Bright Tin. Plated
MIL-STD-202, Method 208 
• Polarity: Cathode Band 
• Mounting Position: Any 
• Ordering Information: See Page 2 
• Marking: Type Number 
• Weight: 0.30 grams (approximate) 
 

 1N4007 - 1.0A RECTIFIER - Diodes Incorporated

Datasheet

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2n2222 transistor

23:33 / /

2n2222 transistor

2N2222A
NPN switching transistors

FEATURES
• High current (max. 800 mA)
• Low voltage (max. 40 V).
APPLICATIONS
• Linear amplification and switching.
DESCRIPTION
NPN switching transistor in a TO-18 metal package.
PNP complement: 2N2907A.

collector-base voltage 2n2222 =60V

collector-base voltage 2n2222A =75V

collector-emitter voltage 2N2222 =30V

collector-emitter voltage 2N2222A =40V

transition frequency 2N2222 =250MH

transition frequency 2N2222A =300MH

collector current (DC) =800MA






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2sd1047

23:18 / /

TRANSISTOR

2sd1047

 NPN PLANAR SILICON TRANSISTOR

AUDIO POWER AMPLIFIER
DC TO DC CONVERTER

 Complementary to 2SB817

High Current Capability
 High Power Dissipation

ABSOLUTE MAXIMUM RATING (TA=25℃  )

 Collector-Base Voltage=200v

 Collector-Emitter Voltage=140v

 Emitter-Base voltage=6

Collector Current DC =10A

Collector Dissipation =100W

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2sd 1879

23:02 / /

2sd1879
Color TV Horizontal Deflection Output Applications
Applications
· Color display horizontal deflection output.
· Color TV horizontal diflection output.
Features
 · High speed (tf=100ns).
· High reliability (Adoption of HVP process).
 · High breakdown voltage (VCBO=1500V).
 
 · On-chip damper diode.

Collector−Base Voltage VCBO=1500v
Collector−Emitter Voltage VCEO=800v
Emitter−Base Voltage VEBO=6v



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2sd2499

21:56 / /

2SD2499
TOSHIBA TRANSISTOR SILICON NPN TRIPLE DIFFUSED MESA TYPE
HORIZONTAL DEFLECTION OUTPUT FOR COLOR TV
Collector Metal (Fin) is Fully Covered with Mold Resin.
 
High Voltage : VCBO = 1500 V
High Speed : tf = 0.3 µs (Typ.) 
Low Saturation Voltage : VCE (sat) = 5 V (Max.)
Bult-in Damper Type
MAXIMUM RATINGS (Tc = 25°C) 
Collector−Base Voltage =1500v
Collector−Emitter Voltage  =600v
Emitter−Base Voltage =5v
Collector Power Dissipation =50w

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2sd1555

21:45 / /

2sd1555
NPN TRIPLE DIFFUSED
 PLANAR SILICON TRANSISTOR

COLOR TV HORIZONTAL OUTPUT
APPLICATIONS(Damper Diode BUILT IN)
High Speed Switching
High Collector-Base Voltage(VCBO=1500V)

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2SD2498

20:43 / /

2SD2498
HORIZONTAL DEFLECTION OUTPUT FOR HIGH
RESOLUTION DISPLAY, COLOR TV 
HIGH SPEED SWITCHING APPLICATIONS 
 
 
High Voltage : VCBO = 1500 V 
Low Saturation Voltage : VCE (sat) = 5 V (Max.) 
High Speed : tf = 0.4 µs (Typ.) 
Collector Metal (Fin) is Fully Covered with Mold Resin. 
MAXIMUM RATINGS (Tc = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Collector−Base Voltage VCBO 1500 V
Collector−Emitter Voltage VCEO 600 V
Emitter−Base Voltage VEBO 5 V
DC IC 6
Collector Current
Pulse ICP 12
A
Base Current IB 3 A
Collector Power Dissipation PC 50 W
Junction Temperature Tj 150 °C
Storage Temperature Range Tstg −55~150 °C
 

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power supply AIWA-TV-A149

18:55 / /

power supply AIWA-TV-A149

R801=680K

R802=470Ω

C801=0.22/300V

IC801=STR-S6707N

C802=0.22/300V

C803=3300P/250V MEECKD CER

C804=3300P/250V MEECKD CER

R804=8.2M/1W

R806=0.33Ω/5W (CEM)

R807=100K/3W

R808=22Ω/1W
R809=1Ω/10W

R805=100K/3W

R810=1Ω/10W

R811=1K

R812=82K/3W

R813=1.8K