Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

linear amplifier for tv transmitter

Status
Not open for further replies.
@

@mine

Newbie level 3
Joined
May 12, 2012
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,301
Hello
It's possible to build a linear amplifier for VHF TV transmitter with one or two 2N3866 transistor ?
How can I proceed ?
And it's possible to use a class C amplifier for VHF/UHF TV transmitter ?
 

It's possible to build a VHF transmitter amplifier with 2N3866 but the output power will be around 0.5-1W max. to my experience.So, output power is not very practical and sufficient being as "transmitter".But it's theoritically possible..
TV transmitter amplifiers are always A-class power amplifiers for analog broadcasting signals.Other classes are not used because of nonlinearity issues.
 


@mine said:
how can I see, in electric diagramm, if stage amplifier is linear or class C amplifier
example, in this video Tx schematic, the 2N4427 (équivalent to 2N3866) is working on class A amplifier or not ?
**broken link removed**
Or in this linear amplifier schematic https://radiofrequencyamplifier.blogspot.com/2011/08/2w-vhf-linear-amplifier-circuit.html
2N4427 is really wotking on linear mode ?
Click to expand...
You should check the Operating Point of the transistor to see the class of the amplifier.
I suggest you to buy a ready to use VHF power amplifier because designing and implementing RF power amplifiers need some fundamental RF design knowledge.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top