Ideal Size and Effect of Stopping Condensers in Audio Amplifiers
The article explains how stopping condensers in grid circuits affect low frequency amplification in resistance coupled amplifiers. It argues that larger condensers reduce suppression and distortion, recommending practical ranges from 0.1 to 1 microfarad for ordinary receivers, and up to 0.1 microfarad for ultra selective sets, noting suppression at 16 cycles and distortion concerns.
MENTIONED IN THIS ARTICLE
A. C
R. A
Collodion Found Best Binder for Radio Coil
The bureau of standards radio laboratory tested binders for winding tuning coils. Collodion proved best among varnish shellac and paraffin, offering rapid drying. A single layer of each binder was applied to a coil, dried, and measured, though measurements were challenging.
MENTIONED IN THIS ARTICLE
Radio Laboratory
Bureau of Standards
Power Drain From Long Speaker Cord Extension
The text notes that using a long speaker cord extension increases power draw, causing noticeable voltage drop as batteries weaken. It suggests equipping the set with a “B” storage battery or a “B” eliminator to mitigate this issue.
Batteries Upright and Coil Bindings Affect Radio Coil Resistance
A note on battery orientation advises keeping dry B batteries upright for maximum life. A discussion of radio coils shows binder materials alter coil resistance across frequencies. At 300 kilocycles binderless coils vary from 3.7 to 3.9 ohms. at 1,100 kilocycles values range from 10.0 to 10.8 ohms depending on binder type.
Insulating Materials Evaluate Coil Distances and Drying Speed
The radio laboratory of the Bureau of Standards reports test results at 1 400 and 1 500 kilocycles showing binderless insulation and several binders including collodion and shellac. Collodion stands out for minimal resistance increase and rapid drying, beneficial for bank-wound coils.
MENTIONED IN THIS ARTICLE
Radio Laboratory
Bureau of Standards
A Gentle Hint Meggie
A light exchange unfolds as Meggie questions Lewis about a loan of five units. Clarence confirms the loan, adds a twist by mentioning Lewis lent a memory course along with the money, hinting at a clever pact between the two.
MENTIONED IN THIS ARTICLE
Meggie
Lewis
Clarence
An Unsatisfied Longing in a Marriage Snapshot
A dialogue reveals a restless young wife and a husband marked by thrift. Before marriage she urged willingness to endure anything while he bluntly cites his hoarded fortune as a caution, hinting at tension between desire and restraint.
None of the safety matches will light
A customer berates a store keeper shouting that the safety matches do not stick or light. The exchange questions safety standards and product reliability.
Sight of Animals Lens Variation Across Mammals
The biological survey notes the crystalline lens varies among mammals. Magnification of an object can occur but cannot be judged by retina or optic nerve alone. If Vita appears three times its normal size, all other objects would be magnified similarly.
MENTIONED IN THIS ARTICLE
Vita
Gambling as Escape in Liberty by Merryle Stanley Rukeyser
In Liberty Merryle Stanley Rukeyser decries gambling as an age old escape from dull life. He calls it a device that lures sensitive minds and dull imaginations toward a brittle, artificial thrill.
MENTIONED IN THIS ARTICLE
Merryle Stanley Rukeyser
Liberty
Ace of the Earth Accoming to Des Viendes
A fragmentary note discusses a calculation by Doctor Light foot determining the creation time as 9 a.m. on October 23, 2004 B C, amid mentions of twenty computations and a supposed coming Des Viendes.
MENTIONED IN THIS ARTICLE
Des Viendes
Doctor Lightfoot
B. C
Food production split in early 19th century analysis
The Department of Agriculture estimates a shift around 1820 to 1830 when roughly half the population produced their own food and half bought it. By about 1825 the balance favored half raising for half the population's consumption, marking a pivotal period in agricultural history.
MENTIONED IN THIS ARTICLE
Department of Agriculture
Also Mentioned on This Page
Wmaizie
Champion Egg Producer
Maizie
University of British Columbia At Agassiz
Poultry Hall of Fame
Canadian Department of Agriculture
Spacht
Lititz
Wise ® Sound Investment
Oldsmobile
Standar
Jerry K. Adams
Watt & Shand
Lancaster
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