United States or United Arab Emirates ? Vote for the TOP Country of the Week !
Joe turned himself about very slowly, with his legs floating indecorously in entirely unintended kicks. He was breathing hard when he pulled himself into the chair and strapped in once more. "I'll take Communications," he told Mike as he settled his headphones. Reluctantly, Mike switched over. "Kenmore reporting to Communications," he said briefly. "We have ended our take-off acceleration.
You do not require a condenser for a simple receiving set, but if you will connect a fixed condenser across your headphones you will get better results, while a variable condenser connected in the closed circuit of a direct coupled receiving set, that is, one where a double slide tuning coil is used, makes it easy to tune very much more sharply; a variable condenser is absolutely necessary where the circuits are inductively coupled, that is, where a loose coupled tuner is used.
When they were a half hour out he contacted the airport again and asked for the weather. The report hadn't changed. He told the airport operator, "The doctor is coming. Please notify the patient." He could almost see the operator jerk to attention as the headphones gave out a crisp "Roger."
He tucked away as many as he could conveniently carry on his person. He handed the rest to Thal. He went competently to the pulsing call-signal. He put headphones to his ears. He listened. His expression became extremely strange, as if he did not quite understand nor wholly believe what he heard. "Odd," he said mildly. He considered for a moment or two.
These extra and larger currents which are the result of the feedback then act on the grid and cause still larger variations of the current in the plate voltage and hence of the current of the B battery that flows through the detector and the headphones. At the same time the tube keeps on responding to the feeble electric oscillations set up in the circuits by the incoming waves.
Run the lead on over and connect it to one of the terminals of the second fixed condenser and the other terminal of this with the plate of the second amplifying tube. Then shunt the headphones around the condenser.
The Countess was a rather large lumbering woman who always came into the studio carrying lots of parcels. One evening she came in and sat in an armchair on the other side of the studio to wait her turn for the Polish broadcast which followed the Greek. As I was reading the news bulletin I suddenly became conscious of a regular ticking noise in the headphones I was wearing.
Where two or more headsets are used with one wireless receiving set they must all be of the same resistance and connected in series, that is, the coils of one head set are connected with the coils of the next head set and so on to form a continuous circuit. The Impedance of Headphones.
The parts you need for this set include: one variocoupler; one .001 microfarad variable condenser; one .0005 microfarad variable condenser; one .0007 microfarad variable condenser; one 2 megohm grid leak; one vacuum tube detector; one 6 volt A battery; one 6 ohm, 1-1/2 ampere rheostat; one 200 ohm potentiometer; one 22-1/2 volt B battery; one .001 microfarad fixed condenser, one pair of 2,000 ohm headphones, and a variometer.
Particularly a decent pair of headphones; I had to hold the army headphone to me ear with one hand which gave me pins and needles. For some years I had kept goldfish and pigeons, so I sold them. A friend of mine had gone to sea as a cadet and his ship went abroad, so I asked him to get me a pair of headphones.
Word Of The Day