Arrangement for rectification, in particular demodulation or mixed rectification, of ultra-short-wave oscillations (decimeter waves) using three-electrode tubes
DE692074C
Electrical contact strip
DE696139C
Amplifier for optional operation from direct or alternating current networks with indirectly heated amplifier tubes
DE692146C
Device to compensate for the pressure conditions of elastically clamped membranes
DE658826C
Device to achieve a feedback that is as constant as possible over the frequency range to be transmitted
DE661148C
Device for the automatic switching of a consumer when connected to AC networks with different or variable voltages
DE664653C
Device for automatic tuning of a radio receiver
DE670463C
Band filter with variable bandwidth
DE680294C
Amplifier circuit
DE674953C
Scale for radio receivers
DE676569C
Fixed large view scale with movable light pointer arranged on the receiver
DE619009C
Mains connection receiver or amplifier
DE639824C
Coil arrangement with one or more windings of thin wire, in which the ends of the thin-wire windings are directly connected to the terminals, soldering devices or the like intended for the connection
DE579312C
Ungrounded receiver or amplifier circuit
DE573069C
Rotary switch for switching electrical speech generators
DE471481C
Control device for electrical resistors for connection to several different mains voltages
