A2452

Charging Two Batteries
$3.5

How alternators, regulators, and batteries work.

This article describes alternator whine, regulator hum, set-points, adding a second battery, voltage drops, dual battery isolators, heavy gauge power cables, and high current contactor switches.

A2448

Battery Testing
$3.5

How batteries are tested and rated

Measurement techniques for batteries are presented. The data is collected over time and charted. How to choose the best battery for the task. Starting demands vs. stand-by time. Competition cars are discussed.

A2478

Inductive Wire Noise In Car Audio Systems
$2.5 Reduced from $3.5. You save $1.00!!

How Signal Cables Pick Up Noise

Benchmark article on how changing electro-magnetic fields can affect small signals. Magnets, wires, electrons, current flow are covered. Diagrams included.

A2447

Bass Up Front
$3.5

How to get the Bass Up Front

This is the premier article on the seven requirements for achieving the illusion of bass up front  -- with the woofers in the back.

A2491

Oscilloscope Waveforms
$2.5 Reduced from $3.5. You save $1.00!!

How to Use Oscilloscopes

Waveforms, phase shifts, Lissajous figures, Single channel and dual channel scopes are presented. How to measure and test with a scope. Many drawings and scope charts presented.