Peltier element as series noise clamp

• US 5,491,452 A
• Filed: 10/26/1994
• Issued: 02/13/1996
• Est. Priority Date: 09/18/1990
• Status: Expired due to Term

• Current Assignee: Netsu Denshi Kogyo Co., Ltd.
• Original Assignee: Kinichi Uemura, Melcor Japan Co., Ltd.
• Inventors: Ohtsubo, Kazuo, Uemura, Kinichi
• Primary Examiner(s): LARKINS, WILLIAM
• Application Number:
  US08/329,688
• Time in Patent Office: 475 Days
• Field of Search: 327/551, 327/552, 327/311, 327/314, 136/203
• US Class Current: 327/552
• CPC Class Codes: H02H 9/044 Physical layout, materials not provided for elsewhere varistors H01C7/12; spark-gaps H01T; Ovshinsky devices H10N70/00
• CPC Class Codes: H04R 23/002 using electrothermic-effect transducer
• CPC Class Codes: H04R 3/04 for correcting frequency response
• CPC Class Codes: H10N 10/00 Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects integrated devices or assemblies of multiple devices H10N19/00
• CPC Class Codes: H10N 10/10 operating with only the Peltier or Seebeck effects
• CPC Class Codes: Y10S 257/93 Thermoelectric, e.g. peltier effect cooling

Abstract

Disclosed are a noise eliminating element having a junction of components of two kinds of electroconductive materials, characterized in that the absolute values of the thermoelectric power of the two kinds of materials is 50 μVK^-1 or higher and there is substantially no rectifying action at the junction. Both the Seebeck effect and the Paltier effect occur simultaneous and create a transient phenomena in one element. Because of the transient phenomena in one element and because of the transient phenomenon based on both effects, noises, particularly the standing wave noises generated at around output current near to zero are eliminated. The noise eliminating elements can be inserted in a magnetic circuit of a speaker circuit for acoustic equipment or in a deflecting coil circuit of an electron image display device.

Claims

1. A method of using a Peltier element to reduce electrical circuit noise in an electrical circuit which includes an electromagnetic device, comprising the steps of:

providing an electrical circuit to produce an alternating electric current through an electromagnetic device;

coupling a Peltier element into said electrical circuit, said Peltier element comprising;

(a) two components of different kinds of electroconductive materials,

(b) a junction between said components,

(c) two electrodes formed, respectively, by a part of said two components for coupling said element into said electrical circuit,

said materials having a thermoelectric power which exceeds 50 μ

VK^-1 as an absolute value at an activating temperature of said element, and wherein there is substantially no rectifying action at said junction.

2. The method of claim 1, wherein the thermoelectric power of said materials exceeds plus or minus 100 μ

VK^-1 at the activity temperature of said element.

3. The method of claim 1, wherein the thermoelectric power of said materials exceeds plus or minus 200 μ

VK^-1 at the activity temperature of said element.

4. The method of claim 1, wherein the thermoelectric power of said materials exceeds plus or minus 300 μ

VK^-1 at the activity temperature of said element.

5. The method of claim 1, wherein said electrical circuit includes an electrical resistance, and further comprising the steps of coupling said Peltier element in parallel with said electrical resistance, and providing said Peltier element with a resistance larger than said electrical resistance.