Books & Publications (KRI) – Kumarasinghe Radio Institute (KRI)

Antenna & Booster 3

ishara — Sun, 01 Sep 2019 11:35:01 +0000

Television channels in Sri Lanka
How to divide VHF/UHF/FM frequency range
Multi channel antenna
Tuning of antennas
Making the antennas
Multi dipoles
Making 34 multi channel antennas. (34-types of multi channel antennas)
Parabolic all channel antenna (1) & (2)
Information on the Multi channel antenna
VHF/UHF booster introduction

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Antenna & Booster 2

ishara — Sun, 01 Sep 2019 11:34:49 +0000

Present Television channels in Sri Lanka
UHF/VHF channel separations
How to tune VHF/UHF antennas
Making Yagi Antennas and Dipoles
How to make VHF channel 5 /6/7/8/9/10/11/12 broad band Yagi Antenna
VHF/UHF all channel Yagi Antenna (1), (2)
VHF channel 3, 4 Yagi Antennas for TNL
Antenna for Rupawahini and ITN
UHF and UHF Antenna for TNL
Antenna for UHF channel 23, 25 MTV
Antenna for UHF channel 31, 35 ETV-1 and 2
Antenna for UHF channel 21, 23, 25, 26, 31, 35
V-antenna for VHF/UHF/FM
FM antenna for weak signal areas
Multi channel Antenna (2), (3)
Combiner (1), (2)
UHF, VHF, VHF/UHF boosters
Connecting various antennas (1), (2), (3)
Regarding VHF/UHF booster
Regarding V- antenna
Parabolic all channel antenna.

The post Antenna & Booster 2 appeared first on Kumarasinghe Radio Institute (KRI).

Antenna & Booster 1

ishara — Sun, 01 Sep 2019 11:34:37 +0000

Television channels
Various Dipole Antennas
Improving the gain of the antenna
Yagi Antenna
Finding out central frequency
Impedance matching circuit (1), (2), (3)
Combiner (Mixer) 1, 2, 3
Splitter, selecting antennas
Indoor Antenna, V-Antenna
Various type of reflect antenna
Channel 5 Yagi Antenna, channel 8 Antenna
Channel 10, 12 Antenna
Channel 5, 6, 7, 8, 9, 10, 11, 12 Antenna
Antennas using in mountain areas (1), (2)
Multi channel Antenna (1), (2)
UHF Multi Channel Antenna (1), (2), (3), (4), (5)
Antenna for Madras Channel, Russian Channels
Parabolic Antenna
FM Antenna (1), (2), (3), (4)
Booster amplifier (1), (2), (3), (4), (5), (6), (7), (8), (9)

The post Antenna & Booster 1 appeared first on Kumarasinghe Radio Institute (KRI).

Transistors

ishara — Sun, 01 Sep 2019 11:34:25 +0000

1, 1.5, 5, 15 Watts Audio Amplifiers with Tone control circuits
Making speaker cabinets (Buffes) with woofers and tweeters
Crossover units
Mono and stereo systems
Color codes
How to make printed board yourself

The post Transistors appeared first on Kumarasinghe Radio Institute (KRI).

Electronic Circuits

ishara — Sun, 01 Sep 2019 11:34:10 +0000

This book includes variety of neat circuits. Transistor radio receiver, IC receiver, Audio amplifier, Testing equipment , Remote control systems, Crossovers are some of the circuits you will find in this edition. There is also a Transformer calculations guide included in this book.

The post Electronic Circuits appeared first on Kumarasinghe Radio Institute (KRI).

Bulb Systems 2

ishara — Sun, 01 Sep 2019 11:33:56 +0000

This book explains how to decorate your home or show room with multi color bulbs and L.E.Ds. Running bulb systems, disco light flasher, multi running systems are some of the things you’ll find inside this book There is also a section where it shows the components used in the circuits.

The post Bulb Systems 2 appeared first on Kumarasinghe Radio Institute (KRI).

Bulb Systems 1

ishara — Sun, 01 Sep 2019 11:33:46 +0000

This book explains how to decorate your home or show room with multi color bulbs and L.E.Ds. Running bulb systems, disco light flasher, multi running systems are some of the things you’ll find inside this book There is also a section where it shows the components used in the circuits.

The post Bulb Systems 1 appeared first on Kumarasinghe Radio Institute (KRI).

Silk Screens & Printed Boards

ishara — Sun, 01 Sep 2019 11:33:32 +0000

Silk screen printing
Printing ink
SKUGI
Screen remover
How to print with Silk screen
Making the artwork
Making a Silk screen
Making a light box
Silk screen frame
Exposed chemicals
Sand pillow
Attach Silk screen to frame
How to get the artwork to silk screen
Make printing ink for Silk screen printing
Making printed boards for business
Making PCBs

The post Silk Screens & Printed Boards appeared first on Kumarasinghe Radio Institute (KRI).

Mobile Phone Antennas

ishara — Sun, 01 Sep 2019 11:33:10 +0000

Television channels in Sri Lanka.
High gain Multi Channel Antenna (with boosters)
VHF/UHF/FM Antenna tuning
Making antennas, dipoles , and dipole Circuits
VHF Antenna (CH 5 to 12)
UHF Antenna (CH 21 to 40)
Outdoor Mobile Phone Antenna
Mobile Phone Antenna with dipole circuits 1, 2, 3, 4
Multi Channel Antenna With Booster 1, 2, 3, 4, 5
Matching Transformer 1 & 2
VHF/UHF booster-1, 2, 3
PCB for Booster circuit
Transistor Data for Boosters
Booster for F.M. Radio and Mobile Phones
Booster for Car F.M. Radio

The post Mobile Phone Antennas appeared first on Kumarasinghe Radio Institute (KRI).

Electricity 2

ishara — Sun, 01 Sep 2019 11:32:49 +0000

12 Volts DC to AC 230 Volts Inverter (100 ,150, 200, 250, 300, 350, 400, 450, 500 Watts)
12 Volts DC to AC 230 Volts Inverter (100 to 500 Watts) with battery charger
12 Volts DC to AC 230 Volts Inverter (50, 70, 100, 125, 150 Watts)
12 Volts DC to AC 230 Volts Inverter (100, 200, 250, 300, 500 Watts)
12 Volts DC to AC 230 Volts Inverter (100 to 500 Watts) with battery charger
Emergency Light – 1, 2 with battery charger (Relay)
Emergency Light – 3, 4, 5, 6, with battery charger (Electronic)
Emergency Light – 7 with battery charger (Electronic) with automatic over charge control
Display (charge and discharge)
Dry battery charger – 1, 2
Ni- Cd battery charger – 3
Car battery charger – 4, 5, 6 (with automatic over charge control)
Ni- Cd battery charger – 7, 8
Emergency light – 1, 2
12 Volts DC to AC 230 Volts Inverter (200, 300, 500 Watts)
12 Volts DC to AC 230 Volts Inverter (200 to 500 Watts) with battery charger
12 Volts DC to AC 230 Volts Inverter (800 Watts) with battery charger

The post Electricity 2 appeared first on Kumarasinghe Radio Institute (KRI).

Books & Publications (KRI) – Kumarasinghe Radio Institute (KRI)

Antenna & Booster 3

Contents

Antenna & Booster 2

Contents

Antenna & Booster 1

Contents

Transistors

Contents

Electronic Circuits

Bulb Systems 2

Bulb Systems 1

Silk Screens & Printed Boards

Contents

Mobile Phone Antennas

Contents

Electricity 2

Contents