OSCILLATORY CIRCUIT FOR ELECTRO-ACOUSTIC CONVERTER

• US 3,432,691 A
• Filed: 09/15/1966
• Issued: 03/11/1969
• Est. Priority Date: 09/15/1966
• Status: Expired due to Term

• Current Assignee: Shoh Andrew
• Original Assignee: Shoh Andrew
• Inventors: SHOH ANDREW
• Application Number:
  US04/579,673
• Time in Patent Office: 908 Days
• US Class Current: 310/316.01
• CPC Class Codes: B06B 1/0253 taken directly from the generator circuit
• CPC Class Codes: H03B 5/1231 the amplifier comprising one or more bipolar transistors
• CPC Class Codes: H03B 5/1296 the feedback circuit comprising a transformer

Claims

1. AN OSCILLATORY CIRCUIT FOR DRIVING AN ELECTRO-ACOUSTIC CONVERTER SUBSTANTIALLY AT PARALLEL RESONANCE COMPRISING:

A LOAD CIRCUIT INCLUDING AN ELECTRO-ACOUSTIC CONVERTER HAVING A PREDETERMINED NATURAL FREQUENCY OF OSCILLATION AND SAID LOAD CIRCUIT EXHIBITING A CAPACTIVE REACTANCE AT SAID NATURAL FREQUENCY;

A DRIVING CIRCUIT COUPLED TO SAID LOAD CIRCUIT AND INCLUDING A SOURCE OF DIRECT CURRENT, A SWTICHING MEANS FOR PROVIDING PULSES OF ENERGY FROM SAID SOURCE, AND THE SERIES CONNECTION OF AN INDUCTANCE AND A CAPACITANCE;

SAID INDUCTANCE PROVIDING A INDUCTIVE REACTANCE WHICH SUBSTANTIALLY AT THE PARALLEL RESONANCE FREQUENCY OF THE CONVERTER EQUALS THE CAPACTIVE REACTANCE OF SAID DRIVING CIRCUIT AND OF SAID LOAD CIRCUIT RELFECTED IN SAID DRIVING CIRCUIT, AND