Process for deactivating a resonance label, and circuit arrangem

Details Process for deactivating a resonance label, and circuit arrangem Process for deactivating a resonance label, and circuit arrangem

1988-04-22

1990-03-06

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340572, 343895, 361402, G08B 1324, H01Q 136, H05K 116

Patent

active

049069748

ABSTRACT:
A resonance label (E) is deactivated by transmitting only a single discharge pulse which produces only a click signal instead of an oscillation and destroys the label (E). A discharge capacitor (C1) which is connected in series with a transmitting antenna (L1) and is rechargeable via a switching system (LDR, 1-5) preferably serves as the energy source for delivering the discharge pulse.

REFERENCES:
patent: 4686516 (1987-08-01), Humphrey
patent: 4736207 (1988-04-01), Siikarla et al.
patent: 4797785 (1989-01-01), Jorgensen

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