STK432 spec
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From: Herman on 28 Mar 2010 12:36 Does anyone have a spec sheet on this part? It is used in a JVCHXZ30. I would like to use it in a different project but the data sheet is not to be found. Numbers all around STK432-70 come up but not that part.
From: Arfa Daily on 28 Mar 2010 20:38 <Meat Plow> wrote in message news:3kkmn5.fdv.19.1(a)news.alt.net... > On Sun, 28 Mar 2010 11:36:02 -0500, "Herman" > <ripe(a)bellsouth.net>wrote: > >>Does anyone have a spec sheet on this part? It is used in a JVCHXZ30. I >>would like to use it in a different project but the data sheet is not to >>be >>found. Numbers all around STK432-70 come up but not that part. >> > > I think the -70 indicates voltage or current. Total output power, isn't it ? 2 x 35w RMS ? Any version of the STK432 data sheet should be good for the basic pinning and specs. Looks like there are 50 watt, 70 watt and 90 watt versions of it. I guess that if you have one with no dash number, it's probably a version that's less than 50 watts total output. If you have a JVC model that it's already used in, then just look up the specs for that model. That should give you a good indication of its power capability, and a quick squint at the schematic will tell you all you need to know about operating voltages, pinning, and support circuitry. Arfa
From: Herman on 29 Mar 2010 08:43 What I need is pin outs, voltage limits, temperature characteristics. Anyone that indicates they have a .pdf spec sheet gives me a "not found" or a spec sheet on some other device such as a voltage regulator. "Herman" <ripe(a)bellsouth.net> wrote in message news:hoo0hi$o7p$1(a)news.albasani.net... > Does anyone have a spec sheet on this part? It is used in a JVCHXZ30. I > would like to use it in a different project but the data sheet is not to > be found. Numbers all around STK432-70 come up but not that part. >
From: Arfa Daily on 30 Mar 2010 05:17 <Meat Plow> wrote in message news:3kmua4.bqi.17.10(a)news.alt.net... > On Mon, 29 Mar 2010 07:43:03 -0500, "Herman" > <ripe(a)bellsouth.net>wrote: > >>What I need is pin outs, voltage limits, temperature characteristics. >>Anyone that indicates they have a .pdf spec sheet gives me a "not found" >>or >>a spec sheet on some other device such as a voltage regulator. >> >>"Herman" <ripe(a)bellsouth.net> wrote in message >>news:hoo0hi$o7p$1(a)news.albasani.net... >>> Does anyone have a spec sheet on this part? It is used in a JVCHXZ30. >>> I >>> would like to use it in a different project but the data sheet is not to >>> be found. Numbers all around STK432-70 come up but not that part. >>> >> > > Download HX-Z30 service manual for free: > > http://www.fixdevice.com/smanuals/file/4965.html > > IC 602 is an STK432-70 2 channel audio power amp. Agreed. If the OP can't find a genuine data sheet, that might suggest that it's now an obsolescent device anyway. Obtaining the service manual for the JVC hifi that it's in, will tell all. Well, certainly pinouts, and the voltages that JVC are applying to it in that hifi can be taken as being the limits for reliable operation. In my experience, most hifi manufacturers don't 'reinvent the wheel' with their products. They pretty much graft ICs and t.f. hybrid modules like STK's into their designs, using an exact copy of the manufacturer's 'typical application' schematic, right down to the values and recommended types for support components. Obviously, the JVC manual is not going to tell you anything about the temperature characteristics of the device, but are these actually important to the OP's application anyway (which is presumably a personal one-off ?) As long as the device is adequately cooled, exact thermal specs should not be an issue. Manufacturers of hifi equipment don't waste money in their designs, so you can bet that the heatsinking that JVC are applying, is the minimum you can get away with for full rated output power, in line with the level of supply rails they are using. Arfa
From: Herman on 30 Mar 2010 07:35
I appreciate all the suggestions. I had already used the schematic to decide what I needed to do. I am making a 3 phase 400 cycle 130 volt power supply for some test equipment. I am driving a 18 volt power transformer in reverse (18 volts in, 125 volts out)and wanted to make sure I did not over stress anything. I picked this part since I had some in stock and it was only $3.18. I thought it would be easy to find the specs. "Arfa Daily" <arfa.daily(a)ntlworld.com> wrote in message news:Vkjsn.86127$Vh1.53308(a)newsfe15.ams2... > > <Meat Plow> wrote in message news:3kmua4.bqi.17.10(a)news.alt.net... >> On Mon, 29 Mar 2010 07:43:03 -0500, "Herman" >> <ripe(a)bellsouth.net>wrote: >> >>>What I need is pin outs, voltage limits, temperature characteristics. >>>Anyone that indicates they have a .pdf spec sheet gives me a "not found" >>>or >>>a spec sheet on some other device such as a voltage regulator. >>> >>>"Herman" <ripe(a)bellsouth.net> wrote in message >>>news:hoo0hi$o7p$1(a)news.albasani.net... >>>> Does anyone have a spec sheet on this part? It is used in a JVCHXZ30. >>>> I >>>> would like to use it in a different project but the data sheet is not >>>> to >>>> be found. Numbers all around STK432-70 come up but not that part. >>>> >>> >> >> Download HX-Z30 service manual for free: >> >> http://www.fixdevice.com/smanuals/file/4965.html >> >> IC 602 is an STK432-70 2 channel audio power amp. > > Agreed. If the OP can't find a genuine data sheet, that might suggest that > it's now an obsolescent device anyway. Obtaining the service manual for > the JVC hifi that it's in, will tell all. Well, certainly pinouts, and the > voltages that JVC are applying to it in that hifi can be taken as being > the limits for reliable operation. In my experience, most hifi > manufacturers don't 'reinvent the wheel' with their products. They pretty > much graft ICs and t.f. hybrid modules like STK's into their designs, > using an exact copy of the manufacturer's 'typical application' schematic, > right down to the values and recommended types for support components. > > Obviously, the JVC manual is not going to tell you anything about the > temperature characteristics of the device, but are these actually > important to the OP's application anyway (which is presumably a personal > one-off ?) As long as the device is adequately cooled, exact thermal specs > should not be an issue. Manufacturers of hifi equipment don't waste money > in their designs, so you can bet that the heatsinking that JVC are > applying, is the minimum you can get away with for full rated output > power, in line with the level of supply rails they are using. > > Arfa > |