All About Circuits Forum Basic Single Tuned Amplifier
 Register Blogs FAQ Members List Today's Posts Search Today's Posts Mark Forums Read

 Homework Help Stuck on a textbook question or coursework? Cramming for a test and need help understanding something? Post your questions and attempts here and let others help.

#1
03-03-2007, 09:36 AM
 Steve1992 Senior Member Join Date: Apr 2006 Posts: 100
Basic Single Tuned Amplifier

With ref. to attached circuit, am I right with the following statement?:

1. Amplifier load is a parallel resonant circuit.

2. Tuned to give high Z at the selected frequency, by varying C1.

3. At resonance, the current is a minimum, Voutput will be large:

Voutput = VDD - Voltage across L1,C1.

Steve
Attached Images
 SingleTunedAmp.JPG (23.4 KB, 106 views)
#2
03-04-2007, 03:14 AM
 Ron H E-book Developer Join Date: Apr 2005 Location: Idaho, USA (GMT-7) Posts: 7,050

You're basically right, but in (3), do you think the output amplitude is a function of the input amplitude?
#3
03-04-2007, 10:38 AM
 Steve1992 Senior Member Join Date: Apr 2006 Posts: 100

Thanks Ron.

The circuit is a basic A.F. amplifier - instead of a load resistor at the drain, there is the cap. Ind. parallel combination.

So the A.F. amp. calculations can be used:
Vouput = Vdd - Voltage across resistor.
#4
03-04-2007, 02:46 PM
 Ron H E-book Developer Join Date: Apr 2005 Location: Idaho, USA (GMT-7) Posts: 7,050

Quote:
 Originally Posted by Steve1992 Thanks Ron. The circuit is a basic A.F. amplifier - instead of a load resistor at the drain, there is the cap. Ind. parallel combination. So the A.F. amp. calculations can be used: Vouput = Vdd - Voltage across resistor.
Yeah, but doesn't the output also swing above Vdd?
Since you posted this under homework help, I'm assuming that's what it is, so I'm being coy.
#5
04-22-2008, 04:32 PM
 narayanbalaji New Member Join Date: Apr 2008 Posts: 1

hi,
can u pls say me the advantages and disadvantages of single tuned n double tuned amplifiers..
#6
04-22-2008, 04:43 PM
 Caveman Senior Member Join Date: Apr 2008 Location: Austin, TX Posts: 471

narayanbalaji,

 Tags amplifier, basic, single, tuned

 Related Site Pages Section Title Worksheet Passive filter circuits Worksheet Resonance Textbook Frequency and phase measurement : Ac Metering Circuits Textbook Resonant filters : Filters Textbook Radio circuits -- INCOMPLETE : Practical Analog Semiconductor Circuits Textbook Resonance in series-parallel circuits : Resonance Video Lecture JFET Amplifiers - Transistors and Transistor Circuits Textbook Input and output coupling : Bipolar Junction Transistors Textbook Biasing techniques : Bipolar Junction Transistors Textbook Diode switching circuits : Diodes And Rectifiers

 Similar Threads Thread Thread Starter Forum Replies Last Post donpetru The Flea Market 1 06-29-2014 01:53 PM vead Homework Help 14 12-28-2011 02:50 PM podarce Homework Help 1 12-04-2011 01:57 AM nebula_fairy Homework Help 4 08-18-2011 09:18 AM Dad_addy The Projects Forum 4 05-08-2011 01:19 PM

 Thread Tools Display Modes Linear Mode

 Posting Rules You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Forum Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Electronics Forums     General Electronics Chat     The Projects Forum     Homework Help     Electronics Resources Software, Microcomputing, and Communications Forums     Programmer's Corner     Embedded Systems and Microcontrollers     Computing and Networks     Radio and Communications Circuits and Projects     The Completed Projects Collection Abstract Forums     Math     Physics     General Science All About Circuits Commmunity Forums     Off-Topic     The Flea Market     Feedback and Suggestions

All times are GMT. The time now is 02:22 AM.