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日蝕32.768KHZ音叉晶體的發(fā)展歷程

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瀏覽：- 發(fā)布日期：2023-09-07 08:36:00【大中小】

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日蝕32.768KHZ音叉晶體的發(fā)展歷程，默默前行的日蝕公司，始終堅(jiān)持初心，將最好的品質(zhì)貢獻(xiàn)于世界各地，同時(shí)不斷開發(fā)更多優(yōu)質(zhì)的使用石英晶體，伴隨著電子行業(yè)的快速發(fā)展，對(duì)于日蝕而言也是新的機(jī)會(huì)，為了滿足更大的市場(chǎng)需求，日蝕公司不斷調(diào)整與優(yōu)化自身的石英晶振產(chǎn)品，使得產(chǎn)品能夠兼并出色的穩(wěn)定性能以及高質(zhì)量的特點(diǎn)，在品質(zhì)方面的把控也超越尋常的嚴(yán)格，正是這些對(duì)品質(zhì)極致的追求，才能夠成就優(yōu)秀的日蝕公司，并通過(guò)精進(jìn)自我，提供創(chuàng)新能力不斷擴(kuò)寬自身的能力邊界。

手表中使用的音叉晶體是石英晶體中的“經(jīng)典”。它的頻率總是正好為32.768kHz。但是為什么是這個(gè)值呢？

這個(gè)問(wèn)題的答案可以在壓電石英晶體的歷史中找到。貝爾電話實(shí)驗(yàn)室是當(dāng)今美國(guó)電話電報(bào)公司電信集團(tuán)的前研究部門，是這一領(lǐng)域的先驅(qū)之一。最初，他們的研究重點(diǎn)是穩(wěn)定無(wú)線電頻率，但很快就清楚了石英晶體也可用于時(shí)間測(cè)量。1928年，美國(guó)人自豪地展示了世界上第一個(gè)石英鐘。

音叉晶體樹立了新的精度標(biāo)準(zhǔn)

在這一突破之前，所有的鐘表都是純機(jī)械運(yùn)轉(zhuǎn)的。通過(guò)安裝石英晶體和使石英振蕩的相應(yīng)能量源，首次引入了電子元件。這確實(shí)奏效了:新款石英表的走時(shí)比純機(jī)械手表精確得多。

但是石英晶體實(shí)際上實(shí)現(xiàn)了什么功能呢？簡(jiǎn)而言之，石英晶體確保手表“知道”一秒持續(xù)多長(zhǎng)時(shí)間。這是通過(guò)產(chǎn)生恰好1赫茲的頻率來(lái)實(shí)現(xiàn)的。赫茲是頻率的常用測(cè)量單位。它表示周期信號(hào)中每秒重復(fù)過(guò)程的次數(shù)；在這種情況下，秒針在表盤上前進(jìn)一個(gè)位置。

輸出頻率32.768kHz？

32.768赫茲音叉晶體的唯一標(biāo)準(zhǔn)頻率來(lái)自哪里？要理解這一點(diǎn)，你必須知道石英晶體的頻率取決于它的形狀和大小。一個(gè)自然頻率只有1赫茲的石英會(huì)如此之大，它更適合“大本鐘”鐘樓，而不是手表。顯然，從生產(chǎn)和使用的角度來(lái)看，這是相當(dāng)不切實(shí)際的，所以有一個(gè)特殊的技巧。

32.768kHz頻率的手表晶體比較容易生產(chǎn)。內(nèi)置于手表中，其原始頻率使用所謂的T觸發(fā)器或波紋計(jì)數(shù)器進(jìn)行分割。每個(gè)T觸發(fā)器可以將石英的頻率減半。如果15個(gè)這樣的觸發(fā)器串聯(lián)，32.768K晶振的輸出頻率正好等于1赫茲。因此，經(jīng)典音叉晶體的頻率最終是簡(jiǎn)單的算術(shù)運(yùn)算和石英生產(chǎn)的一般條件的結(jié)果。

制造商零件編號(hào)	供應(yīng)商	描述	工作溫度
EB1216JA10-24.000M TR	Ecliptek晶振	CRYSTAL 24.0000MHZ 10PF SMD	-40°C ~ 85°C
EB1216JA10-24.576M TR	Ecliptek晶振	CRYSTAL 24.5760MHZ 10PF SMD	-40°C ~ 85°C
EB1216YA10-24.000M TR	Ecliptek晶振	CRYSTAL 24.0000MHZ 10PF SMD	-40°C ~ 85°C
EB1216YA10-24.576M TR	Ecliptek晶振	CRYSTAL 24.5760MHZ 10PF SMD	-40°C ~ 85°C
EB1620JA10-24.576M TR	Ecliptek晶振	CRYSTAL 24.5760MHZ 10PF SMD	-40°C ~ 85°C
EB1620JA10-25.000M TR	Ecliptek晶振	CRYSTAL 25.0000MHZ 10PF SMD	-40°C ~ 85°C
EB1216YA10-32.000M TR	Ecliptek Crystal	CRYSTAL 32.0000MHZ 10PF SMD	-40°C ~ 85°C
EB1620JA10-32.000M TR	Ecliptek晶振	CRYSTAL 32.0000MHZ 10PF SMD	-40°C ~ 85°C
EB1216YA10-27.120M TR	Ecliptek晶振	CRYSTAL 27.1200MHZ 10PF SMD	-40°C ~ 85°C
EA2025JA18-30.000M TR	Ecliptek晶振	CRYSTAL 30.0000MHZ 18PF SMD	-40°C ~ 85°C
EA2025SA10-32.000M TR	Ecliptek晶振	CRYSTAL 32.0000MHZ 10PF SMD	-40°C ~ 85°C
EB3250AYA08-8.000M TR	Ecliptek晶振	CRYSTAL 8.0000MHZ 8PF SMD	-40°C ~ 125°C
E1SJA18-6.000M TR	Ecliptek晶振	CRYSTAL 6.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-18.432M TR	Ecliptek晶振	CRYSTAL 18.4320MHZ 18PF SMD	-40°C ~ 85°C
E1SFA18-4.000M TR	Ecliptek晶振	CRYSTAL 4.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-14.31818M TR	Ecliptek晶振	CRYSTAL 14.31818MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-6.144M TR	Ecliptek晶振	CRYSTAL 6.1440MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-28.63636M TR	Ecliptek晶振	CRYSTAL 28.63636MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-13.000M TR	Ecliptek晶振	CRYSTAL 13.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-19.6608M TR	Ecliptek晶振	CRYSTAL 19.6608MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-9.8304M TR	Ecliptek晶振	CRYSTAL 9.8304MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-32.000M TR	Ecliptek晶振	CRYSTAL 32MHZ 18PF SMD	-
EA2025MA10-16.000M TR	Ecliptek晶振	CRYSTAL 16.0000MHZ 10PF SMD	-40°C ~ 85°C
EA2025MA10-32.000M TR	Ecliptek晶振	CRYSTAL 32.0000MHZ 10PF SMD	-40°C ~ 85°C
E1WCDA12-32.768K	Ecliptek晶振	CRYSTAL 32.7680KHZ 12.5PF TH	-10°C ~ 60°C
E1SJA18-18.000M TR	Ecliptek晶振	CRYSTAL 18.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-20.000M TR	Ecliptek晶振	CRYSTAL 20.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-14.7456M TR	Ecliptek晶振	CRYSTAL 14.7456MHZ 18PF SMD	-40°C ~ 85°C
E1SCA18-7.3728M TR	Ecliptek晶振	CRYSTAL 7.3728MHZ 18PF SMD	-40°C ~ 85°C
E1SEA18-16.000M TR	Ecliptek晶振	CRYSTAL 16.0000MHZ 18PF SMD	-20°C ~ 70°C
E1SEA18-12.000M TR	Ecliptek晶振	CRYSTAL 12.0000MHZ 18PF SMD	-20°C ~ 70°C
E1SJA18-10.000M TR	Ecliptek晶振	CRYSTAL 10.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-12.000M TR	Ecliptek晶振	CRYSTAL 12.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-11.0592M TR	Ecliptek晶振	CRYSTAL 11.0592MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-8.000M TR	Ecliptek晶振	CRYSTAL 8.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-16.000M TR	Ecliptek晶振	CRYSTAL 16.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-3.579545M TR	Ecliptek晶振	CRYSTAL 3.579545MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-4.194304M TR	Ecliptek晶振	CRYSTAL 4.194304MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-16.9344M TR	Ecliptek晶振	CRYSTAL 16.9344MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-5.000M TR	Ecliptek晶振	CRYSTAL 5.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-13.500M TR	Ecliptek晶振	CRYSTAL 13.5000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-9.216M TR	Ecliptek晶振	CRYSTAL 9.2160MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-12.288M TR	Ecliptek晶振	CRYSTAL 12.2880MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-4.500M TR	Ecliptek晶振	CRYSTAL 4.5000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-15.000M TR	Ecliptek晶振	CRYSTAL 15.0000MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-4.433619M TR	Ecliptek晶振	CRYSTAL 4.433619MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-16.384M TR	Ecliptek晶振	CRYSTAL 16.3840MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-6.7458M TR	Ecliptek晶振	CRYSTAL 6.7458MHZ 18PF SMD	-40°C ~ 85°C
E1SJA18-15.360M TR	Ecliptek晶振	CRYSTAL 15.3600MHZ 18PF SMD	-40°C ~ 85°C
E1SDA18-25.000M TR	Ecliptek晶振	CRYSTAL 25.0000MHZ 18PF SMD	0°C ~ 70°C
E1SJA18-4.9152M TR	Ecliptek晶振	CRYSTAL 4.9152MHZ 18PF SMD	-40°C ~ 85°C
E1SGA18-25.000M TR	Ecliptek晶振	CRYSTAL 25.0000MHZ 18PF SMD	0°C ~ 70°C
EA2532QA18-26.000M TR	Ecliptek晶振	CRYSTAL 26.0000MHZ 18PF SMD	-40°C ~ 85°C
EA2532QA18-20.000M TR	Ecliptek晶振	CRYSTAL 20.0000MHZ 18PF SMD	-40°C ~ 85°C
EA2532LA18-30.000M TR	Ecliptek晶振	CRYSTAL 30.0000MHZ 18PF SMD	-40°C ~ 85°C
EA2532QA18-13.560M TR	Ecliptek晶振	CRYSTAL 13.5600MHZ 18PF SMD	-40°C ~ 85°C
EB2532YA12-24.000M TR	Ecliptek晶振	CRYSTAL 24.0000MHZ 12PF SMD	-40°C ~ 125°C
EB1216JA10-26.000M TR	Ecliptek晶振	CRYSTAL 26.0000MHZ 10PF SMD	-40°C ~ 85°C
EB1620JA10-24.000M TR	Ecliptek晶振	CRYSTAL 24.0000MHZ 10PF SMD	-40°C ~ 85°C
EA2025JA18-16.000M TR	Ecliptek晶振	CRYSTAL 16.0000MHZ 18PF SMD	-40°C ~ 85°C
E1WSDA12-32.768K TR	Ecliptek晶振	CRYSTAL 32.7680KHZ 12.5PF SMD	-10°C ~ 60°C
EA2025JA18-32.000M TR	Ecliptek晶振	CRYSTAL 32.0000MHZ 18PF SMD	-40°C ~ 85°C
EA2025JA10-24.000M TR	Ecliptek晶振	CRYSTAL 24.0000MHZ 10PF SMD	-40°C ~ 85°C
EB3250JA12-10.000M TR	Ecliptek晶振	CRYSTAL 10.0000MHZ 12PF SMD	-40°C ~ 85°C
EB3250AYA08-16.000M TR	Ecliptek晶振	CRYSTAL 16.0000MHZ 8PF SMD	-40°C ~ 125°C
EB3250YA12-12.000M TR	Ecliptek晶振	CRYSTAL 12.0000MHZ 12PF SMD	-40°C ~ 125°C
EB3250AYA08-10.000M TR	Ecliptek晶振	CRYSTAL 10.0000MHZ 8PF SMD	-40°C ~ 125°C
E1SJA18-24.000M TR	Ecliptek晶振	CRYSTAL 24.0000MHZ 18PF SMD	-40°C ~ 85°C
EA2532LA18-25.000M TR	Ecliptek晶振	CRYSTAL 25.0000MHZ 18PF SMD	-40°C ~ 85°C
EA2532UA12-24.000M TR	Ecliptek晶振	CRYSTAL 24.0000MHZ 12PF SMD	-40°C ~ 85°C
EB2532JA12-30.000M TR	Ecliptek晶振	CRYSTAL 30.0000MHZ 12PF SMD	-40°C ~ 85°C
EB2532JA12-18.432M TR	Ecliptek晶振	CRYSTAL 18.4320MHZ 12PF SMD	-40°C ~ 85°C
EB2532YA12-18.432M TR	Ecliptek晶振	CRYSTAL 18.4320MHZ 12PF SMD	-40°C ~ 125°C
EB1216JA10-25.000M TR	Ecliptek晶振	CRYSTAL 25.0000MHZ 10PF SMD	-40°C ~ 85°C
EB1216JA10-32.000M TR	Ecliptek晶振	CRYSTAL 32.0000MHZ 10PF SMD	-40°C ~ 85°C
EB3250JA12-16.000M TR	Ecliptek晶振	CRYSTAL 16.0000MHZ 12PF SMD	-40°C ~ 85°C
EB3250YA12-16.000M TR	Ecliptek晶振	CRYSTAL 16.0000MHZ 12PF SMD	-40°C ~ 125°C
EB3250YA12-10.000M TR	Ecliptek晶振	CRYSTAL 10.0000MHZ 12PF SMD	-40°C ~ 125°C
EB3250YA12-24.000M TR	Ecliptek晶振	CRYSTAL 24.0000MHZ 12PF SMD	-40°C ~ 125°C
E3WSDC12-32.768K TR	Ecliptek晶振	CRYSTAL 32.7680KHZ 12PF SMD	-40°C ~ 85°C

面向大眾市場(chǎng)的精確頻率

幾十年過(guò)去了，石英表才最終進(jìn)入大眾市場(chǎng)。1969年，日本精工公司在市場(chǎng)上推出了第一款商用石英手表。然而，46萬(wàn)日元的成本相當(dāng)于一輛小型汽車。但是發(fā)展很快:到20世紀(jì)70年代中期，石英表已經(jīng)比純機(jī)械機(jī)芯的“傳統(tǒng)”手表便宜。日蝕32.768KHZ音叉晶體的發(fā)展歷程.

當(dāng)時(shí)，Ecliptek晶振也抓住了這個(gè)機(jī)會(huì)，建立了自己的音叉晶體和其他頻率控制產(chǎn)品的貿(mào)易和生產(chǎn)網(wǎng)絡(luò)。自然，音叉晶體仍然今天投資組合的一部分。然而，Ecliptek也提供了一個(gè)各種振蕩器音叉頻率為32.768千赫。

watches is something like the “classic” among the quartz crystals. Its frequency is always exactly 32.768 kHz. But why this value?

The answer to this question can be found in the history of quartz crystals. Bell Telephone Laboratories, the former research department of today’s telecommunications group AT&T, is one of the pioneers in this field. Initially, their research focused on stabilizing radio frequencies, but it soon became clear that quartz crystals are also useful for time measurement. In 1928, the Americans proudly presented the world’s first quartz-controlled Clock.

The Tuning Fork Crystal Sets New Precision Standards

Before this breakthrough, all clocks worked purely mechanical. By installing the quartz crystal and a corresponding energy source that makes the quartz oscillate, an electronic component was introduced for the first time. And it worked: The new quartz watch ran much more precisely than the purely mechanical competition.

But what function is actually fulfilled by the quartz crystal? Put simply, the quartz crystal ensures that the watch “knows” how long a second lasts. This is achieved by generating a frequency of exactly one Hertz. Hertz is the common unit of measurement for frequencies. It indicates the number of repetitive processes per second in a periodic signal; in this case the advancement of the second hand by one position on the clock-face.

Output Frequency of 32.768kHz?

Where does the unique standard frequency for a tuning fork crystal of 32.768 Hertz originate? To understand this, you must know that the frequency of a quartz crystal depends on its shape and size. A quartz with a natural frequency of only one Hertz would be so large, it would be more suitable for the “Big Ben” clock tower than for a wrist watch. Obviously, that would be rather impractical in terms of production and use so there’s a special trick.

Watch crystals with a frequency of 32.768 kHz are relatively easy to produce. Built into the watch, its original frequency is split using so-called T-flipflops or ripple counters. Each T-flip-flop can halve the frequency of the quartz. If 15 of these T-flipflops are connected in series, the output frequency of 32.768 kHz equals exactly one Hertz. Thus, the frequency of the classic Tuning fork crystal is ultimately the result of a simple arithmetic operation and the general conditions of quartz production.

Precise Frequencies for the Mass Market

Several decades passed before the quartz watch finally found its way into the mass market. In 1969, the Japanese company Seiko launched the first commercially available quartz wristwatch on the market. However, the cost of 460,000 Yen was equivalent to that of a small car. But development was rapid: By the mid 1970s, quartz watches were already cheaper than “conventional” watches with purely mechanical movements.

At that time, Ecliptek also seized the opportunity and built up its own trade- and production-network for tuning fork crystals and further frequency control products. Naturally, tuning fork crystals are still part of today’s portfolio. However, Ecliptek is also offering a wide range of oscillators with the tuning fork-frequency of 32.768kHz.

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