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Phased
Locked Loop (PLL) Circuits, Page
1
PLL's: #'s - A B - O
PQ - Z Last Updated on:
Monday, October 03, 2011 06:07 PM
Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
1W Portable PLL transmitter - This small FM transmitter includes a
limiter, a microphone amplifier and a PLL digital tuning. All the parts are
placed on one circuit board. The RF power is….(electronic circuit added
08/07/06)
2 gates and a microprocessor form digital PLL - 14-Apr-05 Issue of
EDN Low-frequency PLL needs just a processor and gates.... [Design
Idea by Kenneth Martin, TareTronics Inc, Corinth, MS; Edited by Brad
Thompson]
5W PLL Stereo Transmitter with LCD - Here's PLL FM transmitter
circuit from china. This circuit uses the familiar 2SC1971 for final
power amplifier stage. …(electronic circuit added 08/08/08)
7.6MHz Synthesizer - Obtaining 7.6MHz from 12MHz crystal
with PIC16F84 / 4046 PLL circuit....
8W PLL Stereo Transmitter with LCD - Very stable FM transmitter based on
TSA5511 synthesizer. Frequency is performed with three buttons through PIC16F84
microcontroller. Frequency is displayed on 16x1 LCD.
AN-347: Shielding & Guarding - AN-347-Analog Device Application
Notes....[App Note]How to Exclude Interference-Type Noise.What to do and Why to do itA
Rational Approach
AN-349: Keys to Longer Life for CMOS - AN-349 Analog Devices Application
Notes (app note added 09/08) Here's How CMOS Can be Protected Against Abuse
Audio noise generator drives earphones or small speaker - This is a circuit
that generates white noise, rolled-off to drive earphones or a small speaker. White
noise creates is a "rushing" sound, which sounds something like air rushing by your
ear(s). White noise would be flat with frequency, and since this circuit rolls off
within the audio range, I refer to it as "rolled-off" noise. White (or rolled-off)
noise(circuit added 6/07)
AVR ATMega8 board for PLL MC145170 - This board allow to manage a FM
transmitter including a Phase Locked Loop (PLL)on a serial bus (SPI) like a MC145170.
A current frequency is memorized in EEPROM to configure PLL at power up. Three
auxiliairy frequencies are available for maintenance function and/or HF adjust. A
local interface include 4 keys and a LCD display enable to modify transmitter
parameters. This board can be completely drived from a serial link RS232 (19200
Bds,8b data,2b stop, no parity). A temperature sensor enable to control working
temperature and 2 analog input are used for HF power measure (Forward and Reflected).
Information about TOS protection activation is processed by this board to inform user
(local and remote) on a TOS Alarm. ….(electronic schematic added 11/08)
