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Updated: May 25, 2025
That detector would react upon the board at impact with anything hostile, and automatically throw out the courses it found necessary." "That sounds like ample protection, but I am not enough of a ray-specialist to pass an opinion. Upon what point are you doubtful?" "About leaving them on the board. The only trouble is that the reaction isn't absolutely instantaneous.
"Eleven, M.P.", however, could mean nothing to anybody but Victor except a body clever enough to hide a dictograph detector in a turnip. So Victor saw no reason to believe that Nogam, although undoubtedly guilty of the sin of prying, had been able to read the meaning below the surface of this communication.
One was already playing a beam of force upon the Forlorn Hope, and the other five went into action immediately upon feeling the detector impulses and perceiving that the weapon of their sister ship had encountered an unusual resistance in the material of that peculiarly mirrored wedge.
Adjusting the No. 2 Set. First adjust the crystal detector with the buzzer set as described above with Set No. 1, then turn the knob of your variable condenser so that the movable plates are just half-way in, pull the secondary coil of your loose-coupled tuner half way out; turn the switch lever on it until it makes a contact with the middle contact point and set the slider of the primary coil half way between the ends.
Her various weapons had stopped operating now, the hoppers of the Garnell guns exhausted, the charge of the accumulators aboard the ship down so low the proton guns had died out. "Lord they're taking the whole ship!" "Say Cole, is that any ship you ever heard of before? I don't think that's just a pirate!" "Not a pirate what then?" "How'd he get inside our detector screens so fast?
Where audio frequency transformers are used for stepping up the voltage of the current of the detector and amplifier tubes, the radio frequency current does not get into the plate circuit of the detector at all for the reason that the iron core of the transformer chokes them off, hence, the succeeding amplifiers operate at audio frequencies. A Six Step Amplifier Receiving Set With a Loop Aerial.
"They've made up one of the neatest amateur jobs I've seen in a long time. Let's see how it sounds." He and the doctor donned head phones, and Mr. Brandon manipulated the tuning coil and the crystal detector with a deftness that spoke of long experience.
To use a loud speaker you should have a vacuum tube detector receiving set and this must be provided with a one-step amplifier at least. To get really good results you need a two-step amplifier and then energize the plate of the second vacuum tube amplifier with a 100 volt B battery; or if you have a three-step amplifier then use the high voltage on the plate of the third amplifier tube.
An Experimental Continuous Wave Telegraph Transmitter. Now while this extra tube is used as a generator of oscillations these are, of course, very weak and hence a detector tube cannot be used to generate oscillations that are useful for other purposes than heterodyne receptors and measurements.
Now connect the post of the other contact slide to one of the posts of the detector and the other post of the latter with the binding post a, then connect the binding post b to the ground wire and solder the joint.
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