JPH0237241Y2 - - Google Patents
Info
- Publication number
- JPH0237241Y2 JPH0237241Y2 JP1981020845U JP2084581U JPH0237241Y2 JP H0237241 Y2 JPH0237241 Y2 JP H0237241Y2 JP 1981020845 U JP1981020845 U JP 1981020845U JP 2084581 U JP2084581 U JP 2084581U JP H0237241 Y2 JPH0237241 Y2 JP H0237241Y2
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- potential
- capacitor
- circuit
- resistors
- 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.)
- Expired
Links
- 239000003990 capacitor Substances 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 description 2
- 238000009499 grossing Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Description
【考案の詳細な説明】
この考案は限時動作の正確な限時給電回路に関
する。DETAILED DESCRIPTION OF THE INVENTION This invention relates to an accurate time-limited power supply circuit with time-limited operation.
従来、限時給電回路としてはコンデンサの充電
を利用した限時給電回路がある。 Conventionally, as a time-limited power supply circuit, there is a time-limited power supply circuit that utilizes charging of a capacitor.
このような限時給電回路は限時動作中もしくは
限時動作終了後スイツチを開いてもコンデンサの
電荷が完全に放電されるまでは非常に時間がかか
り、完全に放電しないまま再びスイツチを閉じて
限時動作を行うと短時間で限時動作を終了するこ
とがある。 In such a time-limited power supply circuit, even if the switch is opened during time-limited operation or after the time-limited operation ends, it takes a very long time for the charge in the capacitor to be completely discharged. If you do so, the timed operation may end in a short period of time.
この考案は常に正確な限時動作が行える限時給
電回路を提供しようとするものである。 This invention aims to provide a time-limited power supply circuit that can always perform accurate time-limited operations.
以下、この考案を図示の一実施例に基づいて説
明する。 This invention will be explained below based on an illustrated embodiment.
図において１及び２は入力端子で、入力端子１
は後述のリレー３の常開接点４を介して出力端子
５に接続され、入力端子２は出力端子６に接続さ
れている。 In the figure, 1 and 2 are input terminals, input terminal 1
is connected to an output terminal 5 via a normally open contact 4 of a relay 3, which will be described later, and the input terminal 2 is connected to an output terminal 6.
入力端子１はダイオード７、抵抗８、リレー３
の励磁巻線９及び平滑用のコンデンサ１０との並
列回路、トランジスタ１１のコンデンサ、エミツ
タを介して入力端子２に接続されている。 Input terminal 1 is diode 7, resistor 8, relay 3
It is connected to the input terminal 2 via a parallel circuit with an excitation winding 9 and a smoothing capacitor 10, a capacitor of a transistor 11, and an emitter.
ダイオード７と抵抗８との接続点は、抵抗１
２、ダイオード１３、コンデンサ１４及び抵抗１
５の並列回路を介して入力端子２に接続されてい
る。これらが動作電流供給回路を構成している。 The connection point between diode 7 and resistor 8 is resistor 1
2, diode 13, capacitor 14 and resistor 1
It is connected to the input terminal 2 through 5 parallel circuits. These constitute an operating current supply circuit.
またダイオード７と抵抗８との接続点は、抵抗
１６、抵抗１７及び平滑用のコンデンサ１８の並
列回路を介して入力端子２に接続され、抵抗１６
と抵抗１７との接続点はインバータ１９に接続さ
れている。この抵抗１６，１７が電源スイツチ開
放検出回路を構成している。 Further, the connection point between the diode 7 and the resistor 8 is connected to the input terminal 2 through a parallel circuit of a resistor 16, a resistor 17, and a smoothing capacitor 18.
The connection point between and the resistor 17 is connected to the inverter 19. These resistors 16 and 17 constitute a power switch open detection circuit.
インバータ１９は並列に接続されたインバータ
２０ａ及び２０ｂに接続され、インバータ２０ａ
及び２０ｂは抵抗２１、ダイオード２２、抵抗２
３、インバータ２４，２５及び２６並びに抵抗２
７を介してトランジスタ１１のベースに接続され
ている。これらが閉成信号供給回路を構成してい
る。 Inverter 19 is connected to inverters 20a and 20b connected in parallel, and inverter 20a
and 20b are resistor 21, diode 22, resistor 2
3. Inverters 24, 25 and 26 and resistor 2
7 to the base of the transistor 11. These constitute a closing signal supply circuit.
ダイオード２２と抵抗２３との接続点２８は、
抵抗２９及びダイオード３０との並列回路を介し
てダイオード１３と抵抗１５との接続点に接続さ
れると共に、コンデンサ３１を介して入力端子２
に接続されている。この抵抗２９とコンデンサ３
１とが時定数回路を構成している。 The connection point 28 between the diode 22 and the resistor 23 is
It is connected to the connection point between the diode 13 and the resistor 15 through a parallel circuit with a resistor 29 and a diode 30, and is connected to the input terminal 2 through a capacitor 31.
It is connected to the. This resistor 29 and capacitor 3
1 constitutes a time constant circuit.
入力端子１及び２、いずれか１方にスイツチ３
２を介して電灯線３３に接続され、出力端子５及
び６は電球３４等の負荷が接続されている。 Input terminals 1 and 2, switch 3 on either one
2 to a power line 33, and output terminals 5 and 6 are connected to a load such as a light bulb 34.
また抵抗２９の抵抗値及びコンデンサ３１の容
量は、所望の限時動作時間を得るような値とさ
れ、抵抗１５の抵抗値及びコンデンサ１４の容量
はコンデンサ３１が完全に放電するに充分な時
間、各インバータに動作電流を供給できるような
値とされている。 The resistance value of the resistor 29 and the capacitance of the capacitor 31 are determined to obtain a desired time limit, and the resistance value of the resistor 15 and the capacitance of the capacitor 14 are set such that each capacitor 31 has a sufficient time to completely discharge. The value is set so that the operating current can be supplied to the inverter.
このように構成された限時給電回路は次のよう
に作動する。 The time-limited power supply circuit configured as described above operates as follows.
今、スイツチ３２が開かれすべてのコンデンサ
１０，１４，１８及び３１が放電状態であるとす
る。 Now assume that switch 32 is opened and all capacitors 10, 14, 18 and 31 are in a discharged state.
この状態でスイツチ３２を閉じるとダイオード
７及び１３で直流電流が得られ、コンデンサ１４
が充電されると共に、各インバータ１９，２０
ａ，２０ｂ、２４，２５，２６に動作電流が供給
される。また、抵抗２９を介してコンデンサ３１
にも充電電流が流れる。この時接続点２８の電圧
は低レベルであるのでインバータ２６の出力は高
レベルとなり、トランジスタ１１が導通して励磁
巻線９に電流が流れ、常開接点４が閉じ電球３４
が点灯する。 When the switch 32 is closed in this state, a direct current is obtained in the diodes 7 and 13, and the capacitor 14
is charged, and each inverter 19, 20
Operating current is supplied to a, 20b, 24, 25, and 26. Also, the capacitor 31 is connected via the resistor 29.
Charging current also flows through the At this time, since the voltage at the connection point 28 is at a low level, the output of the inverter 26 becomes a high level, the transistor 11 becomes conductive, current flows through the excitation winding 9, and the normally open contact 4 closes and the light bulb 34
lights up.
なおこの時、インバータ１９の入力は入力端子
２の電位よりも高い高レベルであるのでインバー
タ２０ａ及び２０ｂの出力は高レベルであり、従
つて充電電流がダイオード２２の方向へ流れるこ
とはない。 At this time, since the input of the inverter 19 is at a high level higher than the potential of the input terminal 2, the outputs of the inverters 20a and 20b are at a high level, so that no charging current flows toward the diode 22.
次にコンデンサ３１が充電され接続点２８の電
圧が高レベルとなるとトランジスタ１１が非導通
状態となつて常開接点４が開き電球３４が点灯す
る。 Next, when the capacitor 31 is charged and the voltage at the connection point 28 becomes high level, the transistor 11 becomes non-conductive, and the normally open contact 4 opens and the light bulb 34 lights up.
この状態でスイツチ３２を開くと、電流の供給
が停止されるが、コンデンサ１４の放電電流によ
り各インバータ１９，２０ａ，２０ｂ，２４，２
５，２６は動作する。また、スイツチ３２を開い
たことによりインバータ１９の入力が端子２の電
位と等しい低レベルとなるので、インバータ２０
ａ，２０ｂの出力も低レベルとなる。よつて、コ
ンデンサ３１に畜積されている電荷は、インバー
タ２０ａ，２０ｂの出力側に急速に放電される。
また、コンデンサ３１に蓄積された電荷はダイオ
ード３０を介して各インバータ１９，２０ａ，２
０ｂ，２４，２５，２６の動作電流としても放電
される。 When the switch 32 is opened in this state, the supply of current is stopped, but the discharge current of the capacitor 14 causes each inverter 19, 20a, 20b, 24, 2
5 and 26 work. Furthermore, since the input of the inverter 19 becomes a low level equal to the potential of the terminal 2 by opening the switch 32, the input of the inverter 19 becomes a low level equal to the potential of the terminal 2.
The outputs of a and 20b also become low level. Therefore, the charge accumulated in the capacitor 31 is rapidly discharged to the output side of the inverters 20a and 20b.
Further, the charge accumulated in the capacitor 31 is transferred to each inverter 19, 20a, 2 via the diode 30.
It is also discharged as operating currents 0b, 24, 25, and 26.
従つて、スイツチ３２を一度開いてから、短時
間で再び閉じたとしても、再度閉じたときには既
にコンデンサ３１は完全に放電が終了しているの
で、正確な限時動作を得ることができる。 Therefore, even if the switch 32 is opened once and then closed again within a short period of time, the capacitor 31 has already completely discharged by the time it is closed again, so that accurate time-limited operation can be obtained.
以上のように、この考案によれば、充電される
時間によつて限時を定めているコンデンサを、電
源スイツチが開放されたとき低電位点に短絡させ
る放電回路が設けられているので、このコンデン
サは急速に放電される。従つて、再度スイツチを
閉じたときには、コンデンサには電荷が残つてい
ないので、正確な限時動作を行なうことができ
る。 As described above, according to this invention, a discharge circuit is provided that short-circuits a capacitor whose time limit is determined by the charging time to a low potential point when the power switch is opened. is rapidly discharged. Therefore, when the switch is closed again, no charge remains in the capacitor, so that accurate time-limited operation can be performed.
なお上記実施例において、リレー３の代わりに
他の継電素子たとえばトライアツク等を使用して
もよい。 In the above embodiment, the relay 3 may be replaced by another relay element such as a triac.
図はこの考案に基づく一実施例の回路図であ
る。
３……リレー、４……常開接点、１１……トラ
ンジスタ、１４，３１……コンデンサ、１９，２
０ａ，２０ｂ，２４，２５，２６……インバー
タ、２１，２９……抵抗、３２……スイツチ、３
４……電球。
The figure is a circuit diagram of an embodiment based on this invention. 3...Relay, 4...Normally open contact, 11...Transistor, 14,31...Capacitor, 19,2
0a, 20b, 24, 25, 26... Inverter, 21, 29... Resistor, 32... Switch, 3
4...Light bulb.
Claims (1)
た電流が流れこむ第１の端子と電流が流れだす第
２の端子と、第１及び第２の端子間に直列に接続
された常開スイツチと負荷と、第１の端子側に接
続された第１の抵抗器と第２の端子側に接続され
た第１のコンデンサとを直列に接続した時定数回
路と、第１の抵抗器と第１のコンデンサとの相互
接続点に接続され上記電源スイツチの閉成による
第１のコンデンサの充電が完了するまでの間にわ
たつて上記常開スイツチにこれを閉成する閉成信
号を供給する閉成信号供給回路と、第１及び第２
の端子間に直列に接続された第２及び第３の抵抗
器を含みこれら第２及び第３の抵抗器の相互接続
点の電位が上記電源スイツチが開放状態では第２
の端子の電位と等しくなり上記電源スイツチの閉
成により第２の端子の電位より高い電位となる電
源スイツチ開放検出回路と、入力側が第２及び第
３の抵抗器の相互接続点に接続され出力側が第１
の抵抗器と第１のコンデンサとの相互接続点に接
続され第２及び第３の抵抗器の相互接続点の電位
が第２の端子の電位よりも高いとき出力側の電位
も第２の端子の電位よりも高くなり第２及び第３
の抵抗器の相互接続点の電位が第２の端子の電位
に等しいとき出力側の電位も第２の端子の電位と
等しくなる放電回路と、第１及び第２の端子間に
接続された第２のコンデンサを含みこのコンデン
サの第１の端子側の電極が上記閉成信号生成回路
及び放電回路の電源端子にそれぞれ接続され第２
のコンデンサの容量が上記電源スイツチの開放後
も所定時間にわたつて上記閉成信号生成回路及び
放電回路に動作電流の供給が可能な値に選択され
ている動作電流供給回路とを、具備する限時給電
回路。 A first terminal into which current flows and a second terminal into which current flows, each connected to a power supply via a power switch, a normally open switch and a load connected in series between the first and second terminals. , a time constant circuit in which a first resistor connected to the first terminal side and a first capacitor connected to the second terminal side are connected in series, and the first resistor and the first capacitor. a closing signal supply connected to the interconnection point of the normally open switch and supplying a closing signal to close the normally open switch until charging of the first capacitor is completed by closing the power switch; a circuit, a first and a second
includes second and third resistors connected in series between the terminals of the power switch, and the potential at the interconnection point of the second and third resistors becomes lower than the second resistor when the power switch is open.
a power switch open detection circuit whose input side is connected to the interconnection point of the second and third resistors, and whose input side is connected to the interconnection point of the second and third resistors; side is first
When the potential at the interconnection point of the second and third resistors is higher than the potential at the second terminal, the potential at the output side is also at the second terminal. The potential of the second and third
a discharge circuit in which the potential at the output side is also equal to the potential at the second terminal when the potential at the interconnection point of the resistors is equal to the potential at the second terminal; 2 capacitor, the electrode on the first terminal side of this capacitor is connected to the power supply terminal of the closing signal generation circuit and the discharge circuit, respectively.
and an operating current supply circuit, wherein the capacitance of the capacitor is selected to a value that enables supply of operating current to the closing signal generating circuit and the discharging circuit for a predetermined period of time even after the power switch is opened. Power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981020845U JPH0237241Y2 (en) | 1981-02-17 | 1981-02-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981020845U JPH0237241Y2 (en) | 1981-02-17 | 1981-02-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57135842U JPS57135842U (en) | 1982-08-24 |
| JPH0237241Y2 true JPH0237241Y2 (en) | 1990-10-09 |
Family
ID=29818745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981020845U Expired JPH0237241Y2 (en) | 1981-02-17 | 1981-02-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0237241Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4893952A (en) * | 1972-03-14 | 1973-12-04 |
-
1981
- 1981-02-17 JP JP1981020845U patent/JPH0237241Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4893952A (en) * | 1972-03-14 | 1973-12-04 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57135842U (en) | 1982-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4654538A (en) | Dual input voltage power supply | |
| JPH089655A (en) | Switching control circuit for low-pressure fluorescent lamp and controller | |
| US4780788A (en) | Two-wire switch with a power transistor | |
| JPH0237241Y2 (en) | ||
| US3766463A (en) | Battery charging circuit with scr{40 s triggered by unijunction circuits having means for preventing unijunction from being latched on | |
| JPH04324983A (en) | Light emitting element drive power supply circuit | |
| JPS6341246B2 (en) | ||
| SU1594503A1 (en) | Device for controlling temperature | |
| JPS5936042Y2 (en) | Semiconductor DC switch circuit | |
| JPH021607Y2 (en) | ||
| US4129370A (en) | Controlling circuit for electric shutters | |
| JPS605755Y2 (en) | Ignition pulse generator | |
| US3934178A (en) | Device for generating a signal for a predetermined interval after a power switch is opened | |
| SU1193782A2 (en) | Pulser | |
| JP2747542B2 (en) | Capacitor load type solar cell IV curve tracer | |
| JPS5852640Y2 (en) | Discharge tube flashing circuit | |
| JPS6016983Y2 (en) | reset circuit | |
| SU1057931A1 (en) | Device for temperature control | |
| JPH0223068Y2 (en) | ||
| SU1040600A1 (en) | Time relay | |
| SU1603476A1 (en) | Device for power supply of load with current-limiting at the moment of energization | |
| SU1089741A1 (en) | A.c.voltage-to-d.c.voltage converter | |
| SU484642A1 (en) | Switching device | |
| JPS6034786Y2 (en) | Diesel engine starting preheating device | |
| SU597020A1 (en) | Timer |