Abstract: A driver circuit for an electrostatic transducer which may have a flat or folded configuration. The transducer has a pair of rigid sound transparent stator plates spaced from each other and a flexible, conductive diaphragm disposed between the stator plates. A high voltage is impressed between the stator plates either by a voltage source or by electrets of opposite polarity on the stator plates. The audio signal is applied to the diaphragm through a transformer and a pair of rectifiers connected back to back. Hence, the audio signal is impressed on the diaphragm. The rectifiers are so poled that only a half cycle of the audio signal can be impressed on each of the stator plates. Alternatively, the stator plates are connected to a high voltage rectifier doubler circuit with multiple voltage taps.

Abstract: An electrostatic transducer of the type comprising electrically conductive plates and a conductive, flexible, vibratable diaphragm. The transducer may either be a flat radiator or of the folded type. The surface area of the plates is substantially smaller than that of the diaphragm. Additionally, the plates are preferably staggered to reduce both capacitance effects and the required driving power. The plates may be of different sizes to control dispersion of the sound. Instead of applying an electric bias to the structure, an electret may be used to obviate the necessity of a bias field. The transducer may be used as both a loudspeaker or a microphone. It may be driven by electric signals or partially by electric signals and acoustic waves thus forming an integrator. Finally, it may be driven solely by acoustic waves.