KlausST
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Today, 18:26Hi, Please keep in mind: The generated heat will always be the same. LM317 with / wihtou pass transistor, or any resistor solution or any other...2 replies | 0 view(s) -
Today, 17:36Hi, I didnīt go through the complete thread. But it seems you are doing some frequency measurement. For this you use a "gate" time of 100us....14 replies | 206 view(s)
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Today, 17:24KlausST replied to a thread Embedded project needs devices which can work continuously at +125 degree C in MicrocontrollersHi, No, because the HC138 outputs are push/pull and never high-Z. Klaus68 replies | 1817 view(s)
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Today, 17:16Hi, Mind: itīs not (like expectable) "Max forward voltage vs forward current" it says: "max. forward current vs forward voltage". It is the...3 replies | 58 view(s)
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Today, 13:48KlausST replied to a thread Stepper motor doesn't have a brand or model number! in Elementary Electronic QuestionsHi, I canīt see how you want to connect it nor how it can work. Can you draw a schematic? Klaus13 replies | 311 view(s)
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Today, 13:45Hi, I assume you did not read the diodeīs datasheet. According your measurement you get 3V across 30 Ohms --> 0.1A. Now use Figure 7 of the...3 replies | 58 view(s)
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Yesterday, 20:32David_ replied to a thread Simplest way of converting 240Vrms mains into 450VDC? in Power ElectronicsThis is for a single-phase motor(fan). I have been thinking about voltage doubler directly at the mains but I don't know math good enough to be...12 replies | 422 view(s)
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Yesterday, 18:37Hi, Instead of "somewhere" I recommend to look for such informations at the OPAMP manufacturers. They write the specifications and they can tell...3 replies | 102 view(s)
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Yesterday, 07:57Hi, There are overvoltage protection devices as well as overvoltage protection circuits. Just do an internet search. My recommendation still...7 replies | 98 view(s)
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Yesterday, 07:54Hi, Raspberry Pi is a computer. There are different types. If you want to compare it, then you should give the exact type. Arduino is an IDE....5 replies | 177 view(s)
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Yesterday, 07:45Hi, --> the part does not need 5V. It may be supplied with 3.3V. Klaus7 replies | 98 view(s)
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Yesterday, 07:43KlausST replied to a thread Stepper motor doesn't have a brand or model number! in Elementary Electronic QuestionsHi, If I understand correctly, then you don't have any specification of the motor. --> What makes you think that it is rated for 12V? If the...13 replies | 311 view(s)
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Yesterday, 07:35Hi, Your informations are confusing. The max. rated input voltage of a buck converter does not depend on output voltage. (unless you use...7 replies | 98 view(s)
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17th February 2019, 19:13KlausST replied to a thread Circuit for NPP-301A 100PSI IC (Pressure sensor) combined with MAX1472 RF Transmitter in Hobby Circuits and Small Projects ProblemsHi, Your question is too general. We can't design all the apllication for you (and we don't want to). --> draw a flow chart. Divide your...1 replies | 130 view(s)
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17th February 2019, 19:01Hi, My idea: It's a measurement problem - and no real problem. It is called "alias frequency" when the sampling rate is less than double of...4 replies | 146 view(s)
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17th February 2019, 18:54KlausST replied to a thread RF Detector not detecting cellular phones in RF, Microwave, Antennas and OpticsHi, I have to agree with Brian. I also find it hard where to begin. Like this comment or not: it is no HF design. I can see any design at...24 replies | 794 view(s)
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17th February 2019, 18:19KlausST replied to a thread [SOLVED] Reed solomon encoder in vhdl in PLD, SPLD, GAL, CPLD, FPGA DesignHi, Makes no sense to me. You don't show the tiniest effort of your own. We don't see what you have done so far. --> Do a simple internet...5 replies | 182 view(s)
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17th February 2019, 18:01KlausST replied to a thread [SOLVED] Reed solomon encoder in vhdl in PLD, SPLD, GAL, CPLD, FPGA DesignHi, It seems you misunderstood how a forum works. It is not meant that others do your job. It is meant that you do your job and if you...5 replies | 182 view(s)
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17th February 2019, 11:37Hi, What about an internet search " R 2R DAC schematic" ? Klaus6 replies | 176 view(s)
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17th February 2019, 11:35Hi, Now I'm confused. This sentence clearly says you want two triangular waveforms...--> I assume this is not possible without additional...3 replies | 169 view(s)
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17th February 2019, 08:37KlausST replied to a thread ESD problem solved by using aluminium covered floor tiles? in Elementary Electronic QuestionsHi, You may see it like this: * The person is one electrode of a capacitor. * the other electrode is the floor, the walls, any other - even...17 replies | 264 view(s)
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17th February 2019, 08:18Hi, A R-2R DAC may be built without Opamp, but it has relatively high ohmic output. And relative low ohmic reference input. You should be...6 replies | 176 view(s)
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16th February 2019, 23:01KlausST replied to a thread Stepper motor doesn't have a brand or model number! in Elementary Electronic QuestionsHi, The torque depends on current. No current, low torque, just caused by the magnetic remanence. Klaus13 replies | 311 view(s)
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16th February 2019, 14:56KlausST replied to a thread [General] Possibly complex question as I don't yet have a full understanding of these devices. in MicrocontrollersHi, as already said: Klaus3 replies | 140 view(s)
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16th February 2019, 13:32KlausST replied to a thread [General] Possibly complex question as I don't yet have a full understanding of these devices. in MicrocontrollersHi, You say "input" because you think of current flow. But indeed it is an "output". Think about "information" flow. The microcontroller...3 replies | 140 view(s)
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