1310621 I年θ Η修Λ替換^ 2-7—-—„.,j 特別是指一種高 九、發明說明： 【發明所屬之技術領域】 本發明是有關於一種開關保護迴路 電容性負荷開關接點的保護電路。 [先前技術】 基於ί哀保觀念能源之充分利 七 利用’世界各國無不對低功 率因數之電器規定，必需裎斗甘 而叔升其功率因數，針對日光燈而 言，我國約莫於91年起，卽ρ八 佈CNS 14335及安規 14115規定，必需使用高功率因數之安定器。 參閱圖1，現有之提高功率因數最有效的方法，是於-電源.輸入電路Π)並聯-進相電容器u，用以補償因—電感 性負荷12 (例如日光燈組、馬達等）引致之延後相位。 雖然上述補償之方法可以改善功率因數，但是，卻仍 會衍生以下許多缺失，值待改善： 上述電容器11 電源開g 13 6¾-部份’如於交流電 源零點轉換（Zero_crossing)時，.該電源開關13不受影響，不 會造成任何損壞 '但是，當於峰值時，例如.ιι〇ν(伏特）電 源，即等於以110V(伏特）^455.5^(伏特）之電壓由電源 開關13瞬間充入電容器！卜然而，以卿（瓦特）日光燈之' 補償電容13#/為例’實測結果在15#S(微秒）之時間内即 有160A(安培）之電流充入，此一電流值遠大一般家用之電 源開關13所規定的最大電流，雖然其時間报短暫，亦非每 次切換開關均會達到最大電流，但是對電源開關13會造成 損害，自無可避免。 1310621 • L ..9?,.S. ??" · ·： 此外，上述現象對於不常開/關之電器，只略為減短開 關之使用壽命，並不致引起過大之影響，但現今各種自動 及遙控電器已逐漸增加且被普遍使用於家用電器中，因此 ，被頻繁地開/開的次數也無形中地增多，所以此減短開關 壽命之現象逐漸變為不可忽視，尤其自動控制產品之業者 ，如不能對此種狀況予.以控制並解決，則產品之商譽必受 影響。 【發明内容】1310621 I year θ Η repair replacement ^ 2-7—-- „., j especially refers to a kind of high nine, invention description: [Technical field of the invention] The present invention relates to a switch protection circuit capacitive load switch connection The protection circuit of the point. [Prior technology] Based on the concept of ί 保保, the full benefit of energy, the use of 'electrical regulations for low power factor in all countries of the world, it is necessary to fight the power and the power factor. For the fluorescent lamp, China is about Mo Since 1991, 卽ρ八布 CNS 14335 and Safety Regulation 14115 have required the use of a high power factor ballast. Referring to Figure 1, the most effective way to improve the power factor is to connect the power supply to the input circuit 并联). The phase-in capacitor u is used to compensate for the delayed phase caused by the inductive load 12 (eg, fluorescent lamp, motor, etc.). Although the above compensation method can improve the power factor, it still derives many of the following shortcomings. Improvement: The above capacitor 11 power supply g 13 63⁄4-part 'when the AC power zero point conversion (Zero_crossing), the power switch 13 is not affected, will not cause any Damage 'But, when at the peak, for example, ιι〇ν (volt) power supply, that is equal to 110V (volts) ^ 455.5 ^ (volts) voltage is automatically charged into the capacitor by the power switch 13! However, to Qing (Watt The fluorescent lamp's 'compensation capacitor 13#/ is an example'. The measured result is 160A (ampere) current charging in the time of 15#S (microsecond). This current value is far greater than that specified by the general household power switch 13. The maximum current, although its time is short, does not reach the maximum current every time the switch is switched, but it will cause damage to the power switch 13. It is inevitable. 1310621 • L ..9?,.S. ??" · ·: In addition, the above phenomenon is only for shortening the service life of switches that do not normally turn on/off, and does not cause excessive impact. However, various automatic and remote control appliances have been gradually added and are commonly used in household appliances. Therefore, the number of times of frequent opening/opening increases invisibly, so the phenomenon of shortening the life of the switch gradually becomes non-negligible, especially for those who automatically control the product, if it is not possible to control and solve this situation. , the goodwill of the product will be affected.
因此，本發明之目的，即在提供一種結構簡易，可提 升電器之使用壽命的高電容性負荷開關接點的保護電路。Accordingly, it is an object of the present invention to provide a protection circuit for a highly capacitive load switch contact that is simple in construction and that can increase the useful life of the appliance.
於是，本發明高電容性負荷開關接點的保護電路，是 連接在一交流電源與一 f容性負荷之間，該保護電路包含 一第一驅動件、一第一繼電器、一第二驅動件、一第二繼 '電器、一連接在一訊號輸入端與該第二驅動件之間的延時 單元，及一連接在該第一繼電器與該第二繼電器之間的限 流電阻，當一控制訊號輸入該訊號輸入端後，該第一驅動 件及該延時單元被同步驅動，且該第一繼電器被上述第一 驅動件觸發使接點接合，此時，該交流電源之電流流經該 限流電阻且輸出至該電容性負荷，於經過一廷遲時間後， 該延時單元觸發該第二驅動件，該第二驅動件再驅動該第 二繼電器，使該限流電阻呈短路狀態。 本發明的功效，在高電容性負荷開關開關電路中串接 保護開關接點用之限流電阻，使於電流導通後之短時間内 ，再將限流電阻予以短路，以解決高電流瞬間充入造成電 6 1310621 ' 器損壞之缺失‘，並適用於高功率因數的電器上。®7· 8· 27 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 以下配合參考圖式之較佳實施例的詳細說明中，將可清楚 的呈現。Therefore, the protection circuit of the high-capacity load switch contact of the present invention is connected between an AC power source and a capacitive load, and the protection circuit includes a first driving component, a first relay, and a second driving component. a second relay device, a delay unit connected between the signal input end and the second driving member, and a current limiting resistor connected between the first relay and the second relay, when a control After the signal is input to the signal input end, the first driving component and the delay unit are synchronously driven, and the first relay is triggered by the first driving component to engage the contacts. At this time, the current of the AC power source flows through the limit. The current resistance is output to the capacitive load. After a delay time, the delay unit triggers the second driving component, and the second driving component drives the second relay to make the current limiting resistor be short-circuited. The effect of the invention is that the current limiting resistor for the protection switch contact is connected in series in the high-capacitance load switch circuit, so that the current limiting resistor is short-circuited in a short time after the current is turned on, so as to solve the high current instant charge. Into the electricity 6 1310621 'missing damage' and applicable to high power factor appliances. 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。
參閱圖2，本發明高電容性負荷開關接點的保護電路之 較佳實施例，是連接在一交流電源1與一電容性負荷2之 間，該保護電路包含一第一驅動件3、一第一繼電器4、一 第二驅動件5、一第二繼電器6、一連揍在一訊號输入端7 與該第二驅動件5之間的延時單元8，及一連接在該第一繼 電器_4與該第二繼電器6之間的限流電阻9，而該延時單元 8具有一電阻81及一電容82,使用時是藉由該電阻81與 該電容82的充電過程產生一短暫的延遲時間Τ，在本實施 例中該延遲時間Τ小於1秒，該延時單元8實際製造時也 可以採用正反器、邏輯閘等元件所設計的延遲電路。 至於，本發明保護電路之控制方式：當一控制訊號.100 輸入該訊號輸入端7後，該第一驅動件3及該延時單元8 被同.步驅動，且該第一繼電器4被上述第一驅動件· 3觸發 使接點接合，此時，該交流電源1之電流流經該限.流電阻9 且輸出至該電容性負荷2，於經過該延遲時間Τ後，該延時 單元8觸發該第二驅動件5，該第二驅動件5再驅動該第二 .繼電器6使其接點接合，這時，該限流電阻9呈短路狀態 ，'使限流電阻9不再有任何的損耗，也不再發熱；而，當 控制訊號100未輸入時，交流電源1被遮斷於外，不會進 1310621Referring to FIG. 2, a preferred embodiment of the protection circuit of the high-capacity load switch contact of the present invention is connected between an AC power source 1 and a capacitive load 2, and the protection circuit includes a first driving component 3 and a a first relay 4, a second driving member 5, a second relay 6, a delay unit 8 connected between the signal input terminal 7 and the second driving member 5, and a first relay _4 The current limiting resistor 9 is connected to the second relay 6. The delay unit 8 has a resistor 81 and a capacitor 82. In use, a short delay time is generated by the charging process of the resistor 81 and the capacitor 82. In the embodiment, the delay time Τ is less than 1 second, and the delay unit 8 can also use a delay circuit designed by a component such as a flip-flop or a logic gate. As for the control circuit of the present invention, when a control signal 100 is input to the signal input terminal 7, the first driving member 3 and the delay unit 8 are driven by the same step, and the first relay 4 is A driver 3 triggers the contact. At this time, the current of the AC power source flows through the limit current resistor 9 and is output to the capacitive load 2. After the delay time 经过, the delay unit 8 triggers. The second driving member 5, the second driving member 5 drives the second relay 6 to engage the contacts. At this time, the current limiting resistor 9 is in a short-circuit state, so that the current limiting resistor 9 has no loss any more. , no longer heating; and, when the control signal 100 is not input, the AC power supply 1 is blocked, and will not enter 1310621
矛月辨正侧ISpear moon side I
hi, 2 ί_J 入該保護電路，所以，上述第一、二繼電器4、6.亦均不動 作，不會產生任何損耗或誤動作。 進一步，由於本發明之該電容性負荷2為一種高電容 性負荷，此高電容性負荷2為高功率因數之日光燈、放射 燈或小馬達等；利用上述保護電路之控制下，在電流引入 時，無論上述電容性負荷2中之一電容21容量大小多寡，Hi, 2 ί_J enters the protection circuit, so the above first and second relays 4, 6. do not operate, and will not cause any loss or malfunction. Further, since the capacitive load 2 of the present invention is a high capacitive load, the high capacitive load 2 is a high power factor fluorescent lamp, a radiation lamp or a small motor, etc.; under the control of the above protection circuit, when the current is introduced Regardless of the capacitance of one of the above capacitive loads 2,
均可使電流維持在該第一繼電器4可以承受的範圍内，該 第一繼電器4之接點不致燒損或產生黏合現象，藉此，可 延長該第一、二繼電器4、’6的使用壽命。 其次，本發明利用兩顆繼電器（第一、二繼電器4、6)作 並聯使用，可減低每一繼電器的負荷電流，故相對可減低 繼電器的使用規格（耐電流量），因此，亦間接地降低電子零 件的成本，並減低消費者的使用成本。The current can be maintained within the range that the first relay 4 can bear, and the contact of the first relay 4 does not burn or cause a bonding phenomenon, thereby extending the use of the first and second relays 4, '6. life. Secondly, the present invention utilizes two relays (first and second relays 4, 6) for parallel use, which can reduce the load current of each relay, so that the use specifications (current resistance) of the relay can be reduced relatively, and therefore, indirectly The cost of electronic parts and reduce the cost of use for consumers.
經由上述說明，運用在家用電器或是各種自動及遙控 電器等需要頻繁開/關的電器上，如需限制電容充電電流，· 只需於開關接通之瞬間串接一顆限流電阻9，就可避免高電 流瞬間充入負載（電容性負.荷2)，以提高家用電器之使用壽 命，特別是高功率因數之日光燈、放射燈或小馬達等。 此外，由於本發明之結構簡易，效果良好，故確實有 效達到保護電器不被損壞，且可提升使用壽命之功效與優 點. 值得一提的是，雖然本發明之第一、二驅動件3、5均 -由一電晶體作驅動，當然也可為其他的電子元件，如SCR( 矽控整流器）、TRIAC(交流矽控整流器）等。 1310621 r-s ;,.惟以上所述者，僅為本發明之較佳實施例^ :=以此限定本發明實施之範圍，即大凡依本發明中請= 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵篕之範圍内。 【圖式簡單說明】 是一線路圖，說明一種現有的開關電路；及 « ο θ ; ^ 5 ^ 2疋—電路圖，說明本發明高雷宜 的保幾雷敉μ & 笔奋11負荷開關接點 复兒路的較佳實施例。 •1310621 【主要元件符號說明】 1 ..........交流電源 2 ..........電容性負荷 21.........電容 3 ..........第一驅動件 4 ..........第一繼電器 5 ..........第二驅動件 6 ..........•第二繼電器 7 ·_··……訊號輸入端 8 ...........延時單元 81 .........電阻 82 .........電容 9 ..........限流電阻 100.......控制訊號Through the above description, it is used in appliances such as household appliances or various automatic and remote control appliances that need to be frequently turned on/off. If it is necessary to limit the charging current of the capacitor, it is only necessary to connect a current limiting resistor 9 in series at the moment when the switch is turned on. It can avoid high-current instant charging (capacitive negative load 2) to improve the service life of household appliances, especially high-power factor fluorescent lamps, radiation lamps or small motors. In addition, since the structure of the invention is simple and the effect is good, it is effective to achieve the functions and advantages that the protection device is not damaged, and the service life can be improved. It is worth mentioning that, although the first and second driving members 3 of the present invention, 5 is - driven by a transistor, of course, can also be other electronic components, such as SCR (controlled rectifier), TRIAC (AC controlled rectifier). 1310621 rs ; , . . . , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , The effect changes and modifications are still within the scope of the patent of the present invention. [Simple diagram of the diagram] is a circuit diagram illustrating a conventional switch circuit; and « ο θ ; ^ 5 ^ 2疋—circuit diagram illustrating the high-definition 保 敉 & & & & 11 load switch of the present invention A preferred embodiment of a junction rehabilitation pathway. • 1310621 [Explanation of main component symbols] 1 .......... AC power supply 2 .......... Capacitive load 21......... Capacitor 3 ... .......the first drive member 4 ..........the first relay 5 ..........the second drive member 6 ......... • The second relay 7 · _··...... signal input terminal 8 ........... delay unit 81 ... ... resistance 82 ......... Capacitor 9 .......... current limiting resistor 100....... control signal