Electronics Now articles from October 1993

Electronics Now archives from October 1993

Ultra-high-density disks.
October 1, 1993... Scientists at IBM's Almaden Research Center in San Jose, CA have demonstrated a blue-laser optical recording system that can read and write data at a record-breaking density of 2.5 billion bits (gigabits) per square inch on a removable...

Weather station. (computer-controlled weather-monitoring station)
October 1, 1993... Build a computer-controlled weather-monitoring station and become an expert on local weather conditions. THE BAROMETRIC PRESSURE IS falling rapidly, dropping by almost an inch of mercury in 12 hours. A big storm is on the way. Relative...

PC based test equipment.
October 1, 1993... Boards that plug into computers are attractive alternatives to conventional instruments for many test and measurement applications IT IS DIFFICULT TO FIND ANY HUMAN activity today that hasn't been drastically changed by the personal computer....

TV service case history.
October 1, 1993... Learn about TV service from this step-by-step description of the repair of a faulty receiver. BUSINESS STUDENTS LEARN MANagement techniques by studying business histories, and medical students learn to treat patients by studying medical case...

Triple-output DC power supply.
October 1, 1993... Build a triple-output power supply--a power source you'll find quite useful around the home and shop. A DC POWER SUPPLY IS REQUIRED for nearly all electronic circuits. Some circuits are passive and don't need a power supply, and others draw...

Common collector amplifiers.
October 1, 1993... Learn about common-collector bipolar junction transistor (BJT) transistor amplifiers and apply this knowledge to the circuits that you design BIPOLAR JUNCTION TRANSISTOR (BJT) amplifiers are still widely used in modern electronic circuitry....

Heat management techniques.
October 1, 1993... Proper heat management ensures that components have a long and healthy life. WHENEVER CURRENT FLOWS through an electronic component, that component dissipates power. The power that the part dissipates depends on both the current flowing...

Thermoelectric review. (Hardware Hacker)
October 1, 1993... Judging by the helpline calls lately, there seems to be a lot of interest in the solid-state thermoelectric coolers that are now cropping up in surplus channels. Sadly, most hackers don't pick up on the fact that there are several very rude...

Pulse monitor discoveries. (Hardware Hacker)
October 1, 1993... Warnings: Do not ever modify an EKG-type pulse monitor in any way for any reason! Do not ever attempt to build your own units of this type! What follows is not in any manner to be construed as medical advice. I've been developing some aerobic...