JPS5467408A - Bias oscillatory circuit for miniature tape recorder - Google Patents
Bias oscillatory circuit for miniature tape recorderInfo
- Publication number
- JPS5467408A JPS5467408A JP13434677A JP13434677A JPS5467408A JP S5467408 A JPS5467408 A JP S5467408A JP 13434677 A JP13434677 A JP 13434677A JP 13434677 A JP13434677 A JP 13434677A JP S5467408 A JPS5467408 A JP S5467408A
- Authority
- JP
- Japan
- Prior art keywords
- bias
- oscillatory
- oscillatory output
- voltage
- tape recorder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE: To maintain the bias oscillatory output constant even with fluctuations in the main voltage by extracting a portion of the bias oscillatory output signals and by feeding them back to the base of a bias oscillatory transistor.
CONSTITUTION: An FET Tr1 extracts a portion of a bias oscillatory output, which is amplified by a Tr2 so that it may be rectified and smoothened by a diode D1 and a capacitor C2. A transistor Tr3 acting as a reactance element is connected with the base of a bias oscillator Trb through a capacitor C3. If the bias oscillatory output voltage is increased, the voltage at D is increased, and the impedance between the collector and emitter of the Tr3 so that the current amplification factor hfe of the Trb is equivalently decreased to reduce the bias oscillatory output voltage.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13434677A JPS5467408A (en) | 1977-11-09 | 1977-11-09 | Bias oscillatory circuit for miniature tape recorder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13434677A JPS5467408A (en) | 1977-11-09 | 1977-11-09 | Bias oscillatory circuit for miniature tape recorder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5467408A true JPS5467408A (en) | 1979-05-30 |
Family
ID=15126200
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13434677A Pending JPS5467408A (en) | 1977-11-09 | 1977-11-09 | Bias oscillatory circuit for miniature tape recorder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5467408A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0692442A (en) * | 1992-09-14 | 1994-04-05 | Aichi Dennetsu Kk | Cooling conveyor device for direct baking type continuous oven |
-
1977
- 1977-11-09 JP JP13434677A patent/JPS5467408A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0692442A (en) * | 1992-09-14 | 1994-04-05 | Aichi Dennetsu Kk | Cooling conveyor device for direct baking type continuous oven |
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