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Hi, I have this Willem 5.0 Eprom programmer that I have bought from Ebay. I have bought it for some older eproms that I need to program. With newer 27C256 and 27C512 it works ok, but with older 27128 and 2716 it does not because of the voltage drop on VPP. It has a potentiometer (in the red square) that can be used for VPP adjusting but under load I am unable to do that. It does not go higher than ~10V. I have tried both USB power and external power (from a laptop PSU that can provide max 5A).
The Cypress EZ-USB NX2LP™ Programming Utility is an application specifically designed to download vendor configuration parameters to NX2LP NAND memory devices connected to the Cypress EZ-USB NX2LP NAND Flash Controller. These NAND memory devices will contain the configuration data necessary for the EZ-USB NX2LP device to operate as desired.
The inductor for the step-up part is in the green circle in the picture. It looks like a small capacitor,nothing written on it. -> thanks for the info in the other thread. I have found this site: where the author describes an inductor that should replace the original (number of turns, diameter, etc). But when I have replaced mine with that one, max VPP is even lower, so it seems that it is not ok. This is the picture of the willem.
It looks like your programmer is using a better inductor than most PCB3 variants and it may be as good as the ones you referenced on eBay. Can you read the values for the inductor and timing cap?
The timing cap is connected to pin 3 of the MC34063A. When I was experimenting with the step up regulator on one of my PCB3 variants, I used a J.W.Miller 5900-181 because I happened to have some in my parts bin. That inductor can handle 1.6A, with a saturation current of 2A.
You should stop using the USB power option. It can only be used for reading EPROMs. For programming anything larger than 32Kb, you require VCC > 5V. For 16Kb and 32Kb devices, you can program with VCC=5V, but your programmer will have a VCC voltage drop problem on NMOS EPROMs (and higher capacity, like 8Mb, CMOS devices). It looks like your programmer has several VCC options.
Call of duty 4 setup exe download. The two yellow jumpers by the ZIF socket are probably for sub 5V VCC and the green jumper near the 7805 may give you a couple of VCC options higher than 5V. You need the sub 5V options for proper blank verification and you need the higher options for programming. You're still going to have a VCC drop problem with NMOS EPROMs.
Some have tried to replace the VCC transistor switch with one with a lower saturation voltage. Willem and I decided a relay was the best solution. At 100mA, you get around a 10mV drop vs. 0.5-2V using a transistor. Thanks for reminding me about that website. He has a lot of useful information on Willem type programmers. Situs download film sub indo.
Hi, On the inductor I could not read anything (nothing written). The capacitor is 100nF. I have some electronics knowledge but not much. On the PCB3.0 schematic, the inductor is 100uH. Should I stick to this value of the inductance or higher is better?
When I have built that coil mentioned on the site above, I have realized that when I have added more turns to the specified 55, the max current was even lower. For me it is easier to build the coil as I can experiment with it but it seems not to be working. What should I change? Number of turns or toroid size? Should I change other components from the step up regulator according to the inductor I use? On ebay I can find several inductors with different inductance but not many other characteristics. They only give inductance and rated current (I assume that it is different from saturation current).
But for others I see that they give more data: They say 100uH, rating current 2.5A, saturation current 4A. Or these Best regards. A little larger inductance would be better than smaller. What inductance did you expect with whatever turns you put on your toroid? With no load, you should have been able to get 21V; 25V is sometimes iffy. It looks like the diode on the regulator is a 1N4148 or equiv. I've found that diode to be okay, but some have replaced it with a faster, possibly lower forward voltage, diode.
The 100nF timing cap is probably too large; 200pF to 1000pF is more typical. Are you certain you got the right cap? The decoupling caps are usually 100nF. Click to expand.I do not know about the inductance.
I just took the figures from that site, built the inductor and saw that it was not better than the original. And then I have rebuilt it with more turns but it was worse than before. And in all cases I could not trim the VPP under LOAD over a threshold ->with original inductor ~10.5V, second inductor ~8.5(55 turns of 0.5mm wire) and the last ~7 (with 90 turns of 0.5mm wire) I will look again after the capacitor when I get back home from my office. That one that I have mentioned is connected to PIN3 but maybe there is another one. Maybe changing that to a lower value could help. About the inductance index, I do not know. I took a core that I have found in my boxes with other electronic parts.
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Hi, I have this Willem 5.0 Eprom programmer that I have bought from Ebay. I have bought it for some older eproms that I need to program. With newer 27C256 and 27C512 it works ok, but with older 27128 and 2716 it does not because of the voltage drop on VPP. It has a potentiometer (in the red square) that can be used for VPP adjusting but under load I am unable to do that. It does not go higher than ~10V. I have tried both USB power and external power (from a laptop PSU that can provide max 5A).
The Cypress EZ-USB NX2LP™ Programming Utility is an application specifically designed to download vendor configuration parameters to NX2LP NAND memory devices connected to the Cypress EZ-USB NX2LP NAND Flash Controller. These NAND memory devices will contain the configuration data necessary for the EZ-USB NX2LP device to operate as desired.
The inductor for the step-up part is in the green circle in the picture. It looks like a small capacitor,nothing written on it. -> thanks for the info in the other thread. I have found this site: where the author describes an inductor that should replace the original (number of turns, diameter, etc). But when I have replaced mine with that one, max VPP is even lower, so it seems that it is not ok. This is the picture of the willem.
It looks like your programmer is using a better inductor than most PCB3 variants and it may be as good as the ones you referenced on eBay. Can you read the values for the inductor and timing cap?
The timing cap is connected to pin 3 of the MC34063A. When I was experimenting with the step up regulator on one of my PCB3 variants, I used a J.W.Miller 5900-181 because I happened to have some in my parts bin. That inductor can handle 1.6A, with a saturation current of 2A.
You should stop using the USB power option. It can only be used for reading EPROMs. For programming anything larger than 32Kb, you require VCC > 5V. For 16Kb and 32Kb devices, you can program with VCC=5V, but your programmer will have a VCC voltage drop problem on NMOS EPROMs (and higher capacity, like 8Mb, CMOS devices). It looks like your programmer has several VCC options.
Call of duty 4 setup exe download. The two yellow jumpers by the ZIF socket are probably for sub 5V VCC and the green jumper near the 7805 may give you a couple of VCC options higher than 5V. You need the sub 5V options for proper blank verification and you need the higher options for programming. You\'re still going to have a VCC drop problem with NMOS EPROMs.
Some have tried to replace the VCC transistor switch with one with a lower saturation voltage. Willem and I decided a relay was the best solution. At 100mA, you get around a 10mV drop vs. 0.5-2V using a transistor. Thanks for reminding me about that website. He has a lot of useful information on Willem type programmers. Situs download film sub indo.
Hi, On the inductor I could not read anything (nothing written). The capacitor is 100nF. I have some electronics knowledge but not much. On the PCB3.0 schematic, the inductor is 100uH. Should I stick to this value of the inductance or higher is better?
When I have built that coil mentioned on the site above, I have realized that when I have added more turns to the specified 55, the max current was even lower. For me it is easier to build the coil as I can experiment with it but it seems not to be working. What should I change? Number of turns or toroid size? Should I change other components from the step up regulator according to the inductor I use? On ebay I can find several inductors with different inductance but not many other characteristics. They only give inductance and rated current (I assume that it is different from saturation current).
But for others I see that they give more data: They say 100uH, rating current 2.5A, saturation current 4A. Or these Best regards. A little larger inductance would be better than smaller. What inductance did you expect with whatever turns you put on your toroid? With no load, you should have been able to get 21V; 25V is sometimes iffy. It looks like the diode on the regulator is a 1N4148 or equiv. I\'ve found that diode to be okay, but some have replaced it with a faster, possibly lower forward voltage, diode.
The 100nF timing cap is probably too large; 200pF to 1000pF is more typical. Are you certain you got the right cap? The decoupling caps are usually 100nF. Click to expand.I do not know about the inductance.
I just took the figures from that site, built the inductor and saw that it was not better than the original. And then I have rebuilt it with more turns but it was worse than before. And in all cases I could not trim the VPP under LOAD over a threshold ->with original inductor ~10.5V, second inductor ~8.5(55 turns of 0.5mm wire) and the last ~7 (with 90 turns of 0.5mm wire) I will look again after the capacitor when I get back home from my office. That one that I have mentioned is connected to PIN3 but maybe there is another one. Maybe changing that to a lower value could help. About the inductance index, I do not know. I took a core that I have found in my boxes with other electronic parts.
...'>Willem Pcb50b Software Download(14.12.2018)Hi, I have this Willem 5.0 Eprom programmer that I have bought from Ebay. I have bought it for some older eproms that I need to program. With newer 27C256 and 27C512 it works ok, but with older 27128 and 2716 it does not because of the voltage drop on VPP. It has a potentiometer (in the red square) that can be used for VPP adjusting but under load I am unable to do that. It does not go higher than ~10V. I have tried both USB power and external power (from a laptop PSU that can provide max 5A).
The Cypress EZ-USB NX2LP™ Programming Utility is an application specifically designed to download vendor configuration parameters to NX2LP NAND memory devices connected to the Cypress EZ-USB NX2LP NAND Flash Controller. These NAND memory devices will contain the configuration data necessary for the EZ-USB NX2LP device to operate as desired.
The inductor for the step-up part is in the green circle in the picture. It looks like a small capacitor,nothing written on it. -> thanks for the info in the other thread. I have found this site: where the author describes an inductor that should replace the original (number of turns, diameter, etc). But when I have replaced mine with that one, max VPP is even lower, so it seems that it is not ok. This is the picture of the willem.
It looks like your programmer is using a better inductor than most PCB3 variants and it may be as good as the ones you referenced on eBay. Can you read the values for the inductor and timing cap?
The timing cap is connected to pin 3 of the MC34063A. When I was experimenting with the step up regulator on one of my PCB3 variants, I used a J.W.Miller 5900-181 because I happened to have some in my parts bin. That inductor can handle 1.6A, with a saturation current of 2A.
You should stop using the USB power option. It can only be used for reading EPROMs. For programming anything larger than 32Kb, you require VCC > 5V. For 16Kb and 32Kb devices, you can program with VCC=5V, but your programmer will have a VCC voltage drop problem on NMOS EPROMs (and higher capacity, like 8Mb, CMOS devices). It looks like your programmer has several VCC options.
Call of duty 4 setup exe download. The two yellow jumpers by the ZIF socket are probably for sub 5V VCC and the green jumper near the 7805 may give you a couple of VCC options higher than 5V. You need the sub 5V options for proper blank verification and you need the higher options for programming. You\'re still going to have a VCC drop problem with NMOS EPROMs.
Some have tried to replace the VCC transistor switch with one with a lower saturation voltage. Willem and I decided a relay was the best solution. At 100mA, you get around a 10mV drop vs. 0.5-2V using a transistor. Thanks for reminding me about that website. He has a lot of useful information on Willem type programmers. Situs download film sub indo.
Hi, On the inductor I could not read anything (nothing written). The capacitor is 100nF. I have some electronics knowledge but not much. On the PCB3.0 schematic, the inductor is 100uH. Should I stick to this value of the inductance or higher is better?
When I have built that coil mentioned on the site above, I have realized that when I have added more turns to the specified 55, the max current was even lower. For me it is easier to build the coil as I can experiment with it but it seems not to be working. What should I change? Number of turns or toroid size? Should I change other components from the step up regulator according to the inductor I use? On ebay I can find several inductors with different inductance but not many other characteristics. They only give inductance and rated current (I assume that it is different from saturation current).
But for others I see that they give more data: They say 100uH, rating current 2.5A, saturation current 4A. Or these Best regards. A little larger inductance would be better than smaller. What inductance did you expect with whatever turns you put on your toroid? With no load, you should have been able to get 21V; 25V is sometimes iffy. It looks like the diode on the regulator is a 1N4148 or equiv. I\'ve found that diode to be okay, but some have replaced it with a faster, possibly lower forward voltage, diode.
The 100nF timing cap is probably too large; 200pF to 1000pF is more typical. Are you certain you got the right cap? The decoupling caps are usually 100nF. Click to expand.I do not know about the inductance.
I just took the figures from that site, built the inductor and saw that it was not better than the original. And then I have rebuilt it with more turns but it was worse than before. And in all cases I could not trim the VPP under LOAD over a threshold ->with original inductor ~10.5V, second inductor ~8.5(55 turns of 0.5mm wire) and the last ~7 (with 90 turns of 0.5mm wire) I will look again after the capacitor when I get back home from my office. That one that I have mentioned is connected to PIN3 but maybe there is another one. Maybe changing that to a lower value could help. About the inductance index, I do not know. I took a core that I have found in my boxes with other electronic parts.
...'>Willem Pcb50b Software Download(14.12.2018)
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