JPS6271930U - - Google Patents
Info
- Publication number
- JPS6271930U JPS6271930U JP16278385U JP16278385U JPS6271930U JP S6271930 U JPS6271930 U JP S6271930U JP 16278385 U JP16278385 U JP 16278385U JP 16278385 U JP16278385 U JP 16278385U JP S6271930 U JPS6271930 U JP S6271930U
- Authority
- JP
- Japan
- Prior art keywords
- protection circuit
- temperature protection
- temperature
- control
- communication device
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Transmitters (AREA)
Description
第１図は本考案に係る無線通信機の温度保護回
路の実施例を示すブロツク図である。第２図は従
来例を示すブロツク図である。
Ａ；第１の温度保護回路、Ｂ；第２の温度保護
回路、５；検波器、６；出力電力制御回路、７；
温度検出手段、８；第２の電圧比較器、９；第１
の電圧比較器、１０；強制空冷器、ＴＲ１；直流
増幅器のトランジスタ、Ｒ１；制御抵抗。
FIG. 1 is a block diagram showing an embodiment of a temperature protection circuit for a wireless communication device according to the present invention. FIG. 2 is a block diagram showing a conventional example. A; first temperature protection circuit, B; second temperature protection circuit, 5; detector, 6; output power control circuit, 7;
temperature detection means, 8; second voltage comparator, 9; first
Voltage comparator, 10; Forced air cooler, TR1; DC amplifier transistor, R1; Control resistor.
Claims (1)
第１の電圧比較器に加えて強制空冷器を作動し第
１段階の温度保護を行なう第１の温度保護回路と
、 送信出力を検波しその検波出力を直流増幅器に
加えて送信部の出力電力を制御する手段と前記温
度検出手段の出力信号を第２の電圧比較器に加え
、その出力信号を制御抵抗を介して前記直流増幅
器に加えて制御し、第２段階の温度保護を行なう
第２の温度保護回路とを設けたことを特徴とする
無線通信機の温度保護回路。 (2) 制御抵抗として、出力電力を３ｄＢ程度減
少するに必要な抵抗値に設定したものを用いた実
用新案登録請求の範囲第１項記載の無線通信機の
温度保護回路。 (3) 制御抵抗として、可変抵抗器を用いた実用
新案登録請求の範囲第１項記載の無線通信機の温
度保護回路。[Claims for Utility Model Registration] (1) A first temperature at which the output signal of the temperature detection means provided in the transmitter is applied to the first voltage comparator to operate the forced air cooler and perform the first stage of temperature protection. a protection circuit; a means for detecting a transmission output and applying the detected output to a DC amplifier to control the output power of the transmitter; and a means for applying the output signal of the temperature detection means to a second voltage comparator to control the output signal. 1. A temperature protection circuit for a wireless communication device, characterized in that a second temperature protection circuit is provided which performs second-stage temperature protection by controlling the DC amplifier in addition to the DC amplifier via a resistor. (2) A temperature protection circuit for a wireless communication device according to claim 1, which uses a control resistor whose resistance value is set to a value necessary to reduce the output power by about 3 dB. (3) A temperature protection circuit for a wireless communication device according to claim 1 of the utility model registration claim, which uses a variable resistor as a control resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16278385U JPS6271930U (en) | 1985-10-25 | 1985-10-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16278385U JPS6271930U (en) | 1985-10-25 | 1985-10-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6271930U true JPS6271930U (en) | 1987-05-08 |
Family
ID=31090374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16278385U Pending JPS6271930U (en) | 1985-10-25 | 1985-10-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6271930U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58127434A (en) * | 1982-01-25 | 1983-07-29 | Mitsubishi Electric Corp | Communication equipment |
-
1985
- 1985-10-25 JP JP16278385U patent/JPS6271930U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58127434A (en) * | 1982-01-25 | 1983-07-29 | Mitsubishi Electric Corp | Communication equipment |
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