JPH0453349U - - Google Patents
Info
- Publication number
- JPH0453349U JPH0453349U JP9472990U JP9472990U JPH0453349U JP H0453349 U JPH0453349 U JP H0453349U JP 9472990 U JP9472990 U JP 9472990U JP 9472990 U JP9472990 U JP 9472990U JP H0453349 U JPH0453349 U JP H0453349U
- Authority
- JP
- Japan
- Prior art keywords
- conversion circuit
- circuit
- output
- signal
- constant current
- 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.)
- Granted
Links
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Devices For Supply Of Signal Current (AREA)
Description
第１図乃至第６図は本考案の一実施例に係わる
乾電池式呼出信号発生回路を示すものであり、第
１図は全体を示すブロツク図、第２図は直流／直
流変換回路を示す回路図、第３図は定電流回路を
示す回路図、第４図は直流／交流変換回路を示す
回路図、第５図は動作を示すタイムチヤート、第
６図は実施例回路が組込まれた携帯用の手動交換
機を示すブロツク図であり、第７図は従来の手回
し発電機が組込まれた携帯用の手動交換機を示す
ブロツク図である。
１１……乾電池、１２……直流／直流変換回路
、１３……定電流回路、１４……直流／交流変換
回路、１５ａ，１５ｂ……出力端子、１６……電
話端末、１７……出力コンデンサ、１８，１９…
…制御端子、５１……内線回路、５２……制御回
路、５３……乾電池式呼出信号発生回路、５４…
…アナログスイツチ回路、ａ……呼出指令信号、
ｂ……周波数信号、ｅ……呼出信号。
Figures 1 to 6 show a dry battery-powered calling signal generation circuit according to an embodiment of the present invention. Figure 1 is a block diagram showing the entire circuit, and Figure 2 is a circuit showing a DC/DC conversion circuit. Figure 3 is a circuit diagram showing a constant current circuit, Figure 4 is a circuit diagram showing a DC/AC conversion circuit, Figure 5 is a time chart showing operation, and Figure 6 is a mobile phone incorporating the example circuit. FIG. 7 is a block diagram showing a portable manual switching device incorporating a conventional hand-cranked generator. 11... Dry battery, 12... DC/DC conversion circuit, 13... Constant current circuit, 14... DC/AC conversion circuit, 15a, 15b... Output terminal, 16... Telephone terminal, 17... Output capacitor, 18, 19...
...Control terminal, 51...Extension circuit, 52...Control circuit, 53...Dry cell type call signal generation circuit, 54...
...Analog switch circuit, a...Call command signal,
b...Frequency signal, e...Call signal.
Claims (1)
け規定周波数を有した交流の呼出信号を電話端末
１６へ送出する乾電池式呼出信号発生回路におい
て、 前記呼出指令信号の継続期間だけ動作して乾電
池１１から出力される直流電圧を昇圧する直流／
直流変換回路１２と、この直流／直流変換回路の
出力電流を一定値に制御する定電流回路１３と、
この定電流回路から出力される直流電圧を外部か
ら入力された周波数信号に対応する規定周波数を
有する交流の呼出信号に変換する直流／交流変換
回路１４と、この直流／交流変換回路の出力端子
間に接続されこの直流／交流変換回路から出力さ
れる呼出信号の高調波成分を除去する出力コンデ
ンサ１７とを備えた乾電池式呼出信号発生回路。[Scope of Claim for Utility Model Registration] In a dry battery type ring signal generation circuit that sends an AC ring signal having a specified frequency to a telephone terminal 16 for the duration of a ring command signal inputted from the outside, A DC/
a DC conversion circuit 12; a constant current circuit 13 that controls the output current of this DC/DC conversion circuit to a constant value;
Between a DC/AC conversion circuit 14 that converts the DC voltage output from this constant current circuit into an AC calling signal having a specified frequency corresponding to a frequency signal input from the outside, and the output terminal of this DC/AC conversion circuit. and an output capacitor 17 connected to the DC/AC conversion circuit for removing harmonic components of the calling signal output from the DC/AC conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990094729U JPH0735487Y2 (en) | 1990-09-11 | 1990-09-11 | Dry cell type call signal generation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990094729U JPH0735487Y2 (en) | 1990-09-11 | 1990-09-11 | Dry cell type call signal generation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0453349U true JPH0453349U (en) | 1992-05-07 |
| JPH0735487Y2 JPH0735487Y2 (en) | 1995-08-09 |
Family
ID=31832909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990094729U Expired - Lifetime JPH0735487Y2 (en) | 1990-09-11 | 1990-09-11 | Dry cell type call signal generation circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735487Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5323025A (en) * | 1976-08-17 | 1978-03-03 | Mitsubishi Electric Corp | Pow er converter |
| JPS53101468A (en) * | 1977-02-16 | 1978-09-04 | Seiko Epson Corp | Electronic watch |
| JPS5872368A (en) * | 1981-10-23 | 1983-04-30 | Hitachi Ltd | Power source for vehicle |
-
1990
- 1990-09-11 JP JP1990094729U patent/JPH0735487Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5323025A (en) * | 1976-08-17 | 1978-03-03 | Mitsubishi Electric Corp | Pow er converter |
| JPS53101468A (en) * | 1977-02-16 | 1978-09-04 | Seiko Epson Corp | Electronic watch |
| JPS5872368A (en) * | 1981-10-23 | 1983-04-30 | Hitachi Ltd | Power source for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0735487Y2 (en) | 1995-08-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |