Aaron Dahlen
Richard Feynman is famously quoted as saying:
“Study hard what interests you the most in the most undisciplined, irreverent, and original manner possible.”
That's a fitting description for Aaron Dahlen, LCDR USCG (Ret.). He has a lifelong passion for hands-on discovery of electronics. This was reinforced over a 27-year military career split between electronics technician and mustang officer. Dahlen has also taught electronics ranging from component level repair to topics in industrial automation. Today, he serves as an applications engineer at DigiKey.
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RC Servo Operation from an Engineer's Perspective
555 Timer Video Challenge to Determine Frequency Change in Response to Movement of a Solenoid
Hands-on Experiments to Reduce a Transistor's Turn-Off Time
Visualize Voltage Doubler Operation using LEDs and Advanced Oscilloscope Techniques
Explore Capacitor Charging in a Full Bridge Rectifier with LED Visualization
Pre-Biased Transistors: Save PCB Space, Cut BOM Costs, and Simplify Design!
Explore the sound production section of a movie projector
High voltage speaker wire precautions for a Zenith model 860 AM radio
Teardown of a 1952 Motorola transceiver’ power supply featuring a dynamotor.
Introduction to the All American Five (AA5) vacuum tube radio
Teardown of an antique Philco PT44 AM radio set!
Explore the components of an air variable capacitor as installed in a Sylvania receiver
Tektronix oscilloscope quality build using ceramic terminal blocks with silver solder
Brief introduction to high voltage section of a Tektronix 547 oscilloscope.
Teardown of a 1970s AMF stopwatch.
What is inside a vacuum tube tester?
Use a pin straightener for 7 and 9 pin vacuum tubes.
The 6SN7 is a dual triode, let's test both sections using a tube tester.
Using a Eico 628 vacuum tube tester to test a 6BG6 tube.
Introduction to the Tektronix type 1A1 plug in amplifier
Introduction to the Oscilloscope's AC / DC Coupling Switch
Split Gear to Eliminate Backlash
Inductor orientation in a TRF radio
The Velvet Vernier is a century old radio tuning dial with integral reduction gear.
Cogswell TRF radio capacitor manufactured by Aldes Napier.
Antique roller inductor from a military radio transmitter.
Unboxing of a 100 year old Remler variable capacitor
Introduction to the Crosley 14-AG All American Five radio
Slide rule demonstration
How to measure capacitor leakage with a side of capacitor reforming