Category Archives: Basic Electronics Course

Frequency Specific Microcurrent in healing – MIT EE Susan Downs MD

From Occupy Health Frequency Specific Microcurrent (FSM) is changing the way physicians and patients think about treatment options for pain and many other medical conditions. Exciting data and 20 years of clinical evidence show how frequencies and resonance can be used instead of medications, nutrients and chemical interactions to change Continue reading Frequency Specific Microcurrent in healing – MIT EE Susan Downs MD

MIT EE Susan Downs MD Discusses EMF sensitivity and health risks

Electromagnetic fields are one of the many environmental toxins that adversely affect our health. It affects all of us to varying degrees. It leads to mitochondrial dysfunction, oxidative stress, DNA damage, immune disturbances and both a leaky gut and leaky blood brain barrier. Research studies showed that cell phones and Continue reading MIT EE Susan Downs MD Discusses EMF sensitivity and health risks

Edison cylinder phonograph model C

Phonograph cylinders are the earliest commercial medium for recording and reproducing sound. Commonly known simply as “records” in their era of greatest popularity (c. 1896–1915), these hollow cylindrical objects have an audio recording engraved on the outside surface, which can be reproduced when they are played on a mechanical cylinder Continue reading Edison cylinder phonograph model C

2A3 tube – 1931 magnavox concerto phonograph repair

A single-ended triode (SET) is a vacuum tube electronic amplifier that uses a single triode to produce an output. A typical triode audio power amplifier will have a driver that provides voltage gain, coupled to a triode (like 2A3 and 300B) or a pentode or kinkless tetrode such as EL34 Continue reading 2A3 tube – 1931 magnavox concerto phonograph repair

Technics RS-1500 Reel to Reel Tape Deck Bellows Repair

A new repair method applies to 90% of Technics Reel to Reel Decks. This unit is part of Ultimate series of recorders which sold extremely well because they were very good.
Also, because Technics advertised about them at length. And also because they do look as good as they do sound Continue reading Technics RS-1500 Reel to Reel Tape Deck Bellows Repair

McIntosh – MC-2105 “PRECISION FIDELITY STEREO AMPLIFIER”

The MC-2105 “PRECISION FIDELITY” amplifier was a game changer for MAC, delivering superior fidelity, reliability, and future serviceability… all housed in what is arguably the most beautiful amplifier package ever produced. The 2105 in fact would define Mac’s signature aesthetic – green back-lit logos, blue meters and black glass w Continue reading McIntosh – MC-2105 “PRECISION FIDELITY STEREO AMPLIFIER”