Electronics Forum: quartz (Page 1 of 3)

Heat Transfer Rates from Quartz Lamps

Electronics Forum | Thu Aug 03 10:26:10 EDT 2000 | JohnW

Ok the folk's so how's your math's?? I'm trying to track down an equation for calculating the output of a set of quartz lamps as part of a thermal matching program, anyone got any hints? and Dave...don't do it doesn't count! John

Wrong Crystal

Electronics Forum | Wed Nov 20 12:37:30 EST 2019 | compit

You bought quartz (at DigiKey), which should have 10 pF capacitors, and mounted on a demo board is from JFR - "(..) Load capacitance (CL): Series, 16pF, 20pF, 30pF, or specify (..)" - try changing the quartz capacitors, or check with an oscilloscope

Re: Heat Transfer Rates from Quartz Lamps

Electronics Forum | Sat Aug 05 08:59:25 EDT 2000 | Dave F

John: Don�t do it, well at least until we better understand what you�re doing. What are you doing? Is it "heat capacity"? Heat capacity relates the change in heat to a change in temperature.

Wave Solder Machine Maintenance

Electronics Forum | Thu Nov 29 12:40:31 EST 2001 | caldon

Hussman- I agree. Even some of the Wave soldering machine manufacturers quote High temp paint as a maintenance step. The paint step does not work well with quartz type heating elements Best regards, Cal Manncorp

No Clean Selective Solder

Electronics Forum | Wed Jul 31 07:44:54 EDT 2002 | mzaboogie

Hi Pete, It is an alcohol based NC flux. The machine does have quartz preheaters. We are preheating to the temp specified by the flux. Thanks Chris

Wavesoldering Defect

Electronics Forum | Fri Sep 17 02:12:16 EDT 2004 | Adam

Rob The machine is SEHO MWS8240, Fitted with a foam fluxer, a combination of IR,Quartz and Convection preheaters together with a chip and delta wave. Adam

asymmetrical element in Yamaha VIOS

Electronics Forum | Thu Jun 18 20:19:04 EDT 2020 | compit

I have to place the element as in the attachment. The nozzle grabs the quartz, but it is not the center of the module and I cannot recognize it correctly. How to deal with the shift? What do you treat such elements - chip, IC, other?

Re: Heat Transfer Rates from Quartz Lamps

Electronics Forum | Fri Aug 11 17:21:43 EDT 2000 | Dave F

John: Sorry I'm tardy getting back to you on this Heat capacity = [applied voltage in volts*applied current in amps*(time ending in seconds - time start in seconds)]/(�K ending - �K start) The units of heat capacity are joules per mole-degree when

wave profiling for ersa ews500

Electronics Forum | Fri Jan 13 12:12:48 EST 2006 | jimk

we have 4 bottom IR heaters and a 2 zone bottom Quartz heater (2 lamps/4 lamps) and 1 convection heater above zone 1 IR. we have very tight restrictions from customer and I could send profile view to your email if possible

Recommended Reflow Benchtop Oven

Electronics Forum | Fri Aug 30 02:12:19 EDT 2013 | raqz

Hi! I have been studying the reflow process. And now, I am researching for a recommended reflow oven that can process a small to low-medium production SMT soldering. For the experts in the reflow field, please recommend a reliable reflow oven. Here

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