FWARC_Topics:        [Various Selections for the FWARC Club Meetings]

by WA7RSO - 01/10/2021

"Looking Back a Few Years"

"Early Logic"

Study Guides for HAM Radio Licenses

New Total Re-Write of the "Sound_Bites" (>2,000 Sound Bites @ 8 different WPM Speeds)

08/27/2020 - "Tech Net" - The Description of the Schematic in QST-BYI--Sept, 2020 - Page 30

"TTL Thresholds"

09/10/2020 - Club Meeting: "The Two Puzzles" ( ~5 minutes)

"ELI" for Pure Inductance (90 Degree Phase Shift)

"ICE" for Pure Capacitance (90 Degree Phase Shift)

09/10/2020 - Club Meeting: "Neat Tricks"

Db's without calculators or formulas ("Interpolating", a technical word for educated guessing)

Estimating Parallel Resistors without formulas or calculators

(also, see Estimating in "Solutions-For-Education.com")

Study Guides for HAM Radio Licenses

09/24/2020 - "Tech-Net" Explaining Reactance

Static vs Dynamic Considerations (pdf / html)

10/22/2020 - "Tech-Net" Introduction to Gate Functions, Logic Functions

11/19/2020 - "Tech-Net" Taking advantage of the MFJ-269 and other Antenna Analyzers

Review of Series and Parallel Circuits, especially the Ladder Circuit

More Detailed Gate Descriptions and Schematics with Labs

Gating Logic - Functions - Coincidence - Controls
Initial By Functions Multiple Inputs Multiple Controls
Basic Gates Gate Functions Coicidence Gating Enable and Inhibit Controls
Enable & Inhibit Controls
 Enables  Example 1  Example 2  Example 3  Example 4
 Inhibits  Example 5  Example 6  Example 7  Example 8

 "Muti-Mode-Keyer" - Circuit Description, Schematics, Software

Various Versions:
Early - before 1973 Early - 1973 Current - with  Arduino   Current - 44-Pin Cards

Current - 44Pin Cards & CPU

"Tri-Mode" Wire-Wrap (Transistorized) 

"Tri-Mode" - TTL

Logic Module with Mega Timing

Logic_Module, & Timing_Module Logic_Module & Timing_Module with CPU (extra inputs & control)

 

Next "Digital Lab" Pages:
=====================================================
DigitalLabs2 - Connective Gating of NAND's NOR's

DigitalLabs3 - Exclusive-OR Circuits

DigitalLabs4 - Data Latches & R-S Flip-Flops

DigitalLabs5 - J-K Flip-Flop Considerations

DigitalLabs6 - Timer Circuits - One-Shots/Single-Shots, Free-Running

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