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[工业]进口热电偶储能式点焊机手绘电路图,请高手分析工作原理 [复制链接]

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离线lfkui
 
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只看楼主 倒序阅读 我要置顶 楼主  发表于: 2012-03-03
经过半天的绘制,终于把电路图画好了,请各位高手分析这焊机工作原理,里面带的电瓶是12V的,调节前面板旋钮,通过芯片处理可以给那个大电容充电到不同电压,最高可到80V,充电越高,焊接时输出功率也就越大,输出功率范围为5-50W,当充电到设定功率时,前面板的红色LED灯会亮,且里面有个蜂鸣器会响,提醒操作人员可以进行焊接了.
由于我对电路原理一窍不通,请高手分析,怎么把12V的电压给提高到80V给17000μF的大电容充电的呢?

看看厂家说明:IN ENGLISH
SIZE- 3 1/4" High, 6" Wide, 6 1/4" Deep
WEIGHT-6 1/4 Pounds
STORED WELD ENERGY - 5 to 50 Watt seconds
WIRE GAUGE - Welds wire pairs of #24 gauge or finer (#20 for J, K & E)
CYCLE TIME - Can perform 5 to 10 welds per minute, depending on energy setting
CONTROLS - Provides energy adjustment control, and visual and audio indication of weld charge cycle completion
POWER - Will operate from either AC lines or self-charging internal battery. Will perform several hundred welds on charged battery. 120 VAC 60 Hz line power (220 VAC 50 Hz optional)

CONTROLS, INDICATORS, and OVERLOAD PROTECTION
The power level available for welding is set by the position of the front of the control knob. This control also functions as the on/off switch. The knob is calibrated in Watt seconds or Joules. The maximum available power is approximately 50-Watt seconds. The control actually regulates the voltage to which the energy storage capacitor is charged. The stored energy is proportional to the square of the voltage, and the voltage can be varied between 15V and 80V. Increasing the setting of the control knob will cause the capacitor to be charged to thehigher level. However, decreasing the setting will not reduce the value already stored, so a welding cycle will always release an energy pulse equal to the highest setting since last recent discharge.

When the internal circuitry has charged the energy storage capacitor to the level set by the control knob, the front panel LED and internal sounder are activated. These inform the operator that the unit is ready for another cycle. The sounder also helps to conserve battery energy during portable operation by reminding the operator that the welder had been left on.

A circuit breaker protects against overloads. The circuit breaker opens the low voltage AC/DC supply if excessive current is being drawn. A 1/4 Amp fuse mounted on the internal circuit board is in series with the AC power cord.

HotSpot Thermocouple Welder (50 Watt Sec.) ........... $ 689.00 each
Price Includes: HotSpot Welder, Standard 6 " Wire Holding Pliers, Rechargeable Battery, Eye Shielding Protective Goggles, Grounding Magnet, Carbon Block, Instruction Booklet.

HotSpot Expansion Kit ........... $ 99.00 each
Price Includes: Wraparound Field Cover, Holding Vice, Diagonal Cutter, Miniature 5" Wire Holding Pliers, High Temperature Utility Cement, Dressing File, Extra Pair of Electrode Attachment Ferrules, Magnifier.

Wraparound Field Cover........... $ 55.95 each


顺便附上LM78S40的DATASHEET

更多焊机照片请点击:http://bbs.mydigit.cn/read.php?tid=307606
焊机厂家网站请查看:http://www.dcccorporation.com/hotspot1.html




[ 此帖被lfkui在2012-03-03 19:27重新编辑 ]
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离线gzshuma
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只看该作者 1楼 发表于: 2012-03-03
自己画电路图呀,lz技术果然好呀。
离线社建电子

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只看该作者 2楼 发表于: 2012-03-03
那个芯片是专用的吧。
离线lfkui
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只看该作者 3楼 发表于: 2012-03-03
引用第2楼社建电子于2012-03-03 17:57发表的  :
那个芯片是专用的吧。

不是专用的,是个通用的芯片
离线ynqjzzh

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只看该作者 4楼 发表于: 2012-03-03
昨天我还在看你发的那个拆点焊机帖,今天我用微波炉变压器做的已经完成一半了,等我完成后也贴出来晒晒
离线lfkui
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只看该作者 5楼 发表于: 2012-03-03
引用第4楼ynqjzzh于2012-03-03 18:45发表的  :
昨天我还在看你发的那个拆点焊机帖,今天我用微波炉变压器做的已经完成一半了,等我完成后也贴出来晒晒

不知道你DIY的焊机能够调节功率大小,用于焊接不同厚度的工件?
离线彭大伟

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只看该作者 6楼 发表于: 2012-03-03
可控硅画错了。。
离线lfkui
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只看该作者 7楼 发表于: 2012-03-03
引用第6楼彭大伟于2012-03-03 22:20发表的  :
可控硅画错了。。

呵呵,小辫子画错位置了!
离线hgnoshgne
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只看该作者 8楼 发表于: 2012-03-04
317上的二极管反了吧。原理三极管l1,bg38和ic   组成升压开关稳压器,RP1调电压,
离线小瑞可可

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只看该作者 9楼 发表于: 2012-03-04
楼主能否把正确的电路图发一下,我比较感兴趣
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