Patent
Low cost telemeter for monitoring a battery and DC voltage converter power supply
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TLDR
In this article, a telemetry circuit for monitoring the battery and DC-to-DC converter voltages of a projectile fuze which includes a frequency modulated transmitter to which signals are fed alternately from a pair of voltage-controlled oscillators is presented.Abstract:
A telemetry circuit for monitoring the battery and DC-to-DC converter voltages of a projectile fuze which includes a frequency modulated transmitter to which signals are fed alternately from a pair of voltage-controlled oscillators. The output frequency of each voltage-controlled oscillator are determined by the battery voltage and the converter output voltage of a fuze circuitry, respectively. A constant frequency signal is provided by a relaxation oscillator to define the sampling rate by which the two DC voltages are monitored on a time-sharing basis. The constant frequency signal is fed to a pair of transistor switches which alternately disable each of the two voltage-controlled oscillators such that the outputs of each of the voltage-controlled oscillators, which comprise a frequency varying modulation signal, are alternately fed to the frequency modulated transmitter.read more
Citations
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Low battery voltage indicator circuit for a metal detector
TL;DR: In this paper, a metal detector with three coils, a transmit coil, a receive coil, and a circuit means for detecting metal objects due to a change in the magnetic coupling between the coils.
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Patent
Method of correcting the pre-programmed initiation of an event in a spin-stabilized projectile, device for executing the method and use of the device
Pierre H. Freymond,Klaus Muenzel +1 more
TL;DR: In this article, a method for correcting a pre-programmed time of disaggregation of a spin-stabilized projectile is presented, where the deviation of the actual muzzle velocity from the theoretical muzzle velocity is taken into consideration.
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Method for information transmission in a fuse in ammunition technology
TL;DR: In this paper, self-telemetry of a projectile fuse emitting microwaves or optical waves, data relating to the operating cycle and the Doppler signals generated in the fuse are also additionally emitted by means of the transmitter.
References
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Patent
Frequency shift keying
TL;DR: In this article, an improved method of and means for signalling by telegraphy is described. The application in particular discloses an improved TElegraphy system of the frequency shift type, wherein a carrier is keyed from a first frequency which may represent mark to a second frequency, separated...
Patent
Frequency shift pulse time modulation
TL;DR: In this paper, the present invention relates to modulation systems for use with radio frequency carrier signals, and more particularly to new and improved pulse time modulation systems which are simple in construction and highly effective in operation.