Easy peasy
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Yesterday, 22:13talking crap unfortunately... - the gap length is not independent of gap area - where he gets this off the cuff nonsense is a mystery - perhaps...19 replies | 375 view(s) -
Yesterday, 21:39Or - you can increase the pri turns to 60 and double the gap - and hey presto - DCM ... and a decent flyback voltage ( 136V ) and a 100V...19 replies | 375 view(s)
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Yesterday, 04:2560V is too low for the o/p diode with your existing Tx, needs to be 150V at least - see posts above ...19 replies | 375 view(s)
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15th February 2020, 22:22baileychic replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersOops... Yes, forgot to wrap in while(1) loop volatile unsigned int Counter = 0; volaile unsigned int oldCounter = 0; void ext0_isr(void)...28 replies | 504 view(s) -
15th February 2020, 21:53baileychic replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersTry this. volatile unsigned int Counter = 0; volaile unsigned int oldCounter = 0; void ext0_isr(void) interrupt 0 { Counter++; }28 replies | 504 view(s)
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15th February 2020, 21:07It depends on the wiring inductance ( layout ) and de-coupling on the power stage ... and the leakage in the Tx, and the o/p choke, and the...56 replies | 2933 view(s)
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15th February 2020, 17:43baileychic replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersMissing brackets. volatile unsigned int Counter = 0; volaile unsigned int oldCounter = 0; void ext0_isr(void) interrupt 0 { Counter++; ...28 replies | 504 view(s)
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15th February 2020, 12:50baileychic replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersVery simple. Try this. volatile unsigned int Counter = 0; volaile unsigned int oldCounter = 0; void ext0_isr(void) interrupt 0 { ...28 replies | 504 view(s)
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15th February 2020, 11:46baileychic replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersTry this. volatile unsigned int Counter = 0; volaile unsigned int oldCounter = 0; void ext0_isr(void) interrupt 0 { Counter++;28 replies | 504 view(s)
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15th February 2020, 04:31baileychic replied to a thread Glow LED on specified counter values 0-500 in 89c52 uC in MicrocontrollersTry this. unsigned int Counter = 0; void ext0_isr(void) interrupt 0 { Counter++; }28 replies | 504 view(s)
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15th February 2020, 03:22make Rsns smaller for more power - if the snubber diode is getting hot the transformer has too much leakage inductance ... also the Fr07...19 replies | 375 view(s)
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15th February 2020, 00:15Easy peasy started a thread PWRTRNX . com power electronics design in Business, Promotions, Advertisingemail us for professional power electronics and control system design, EMC troubleshooting, thermal design and similar 1W - 250kW0 replies | 233 view(s)
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14th February 2020, 21:28if there is a current limit on the primary - this will limit max power out ...19 replies | 375 view(s)
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14th February 2020, 21:26Easy peasy replied to a thread The "cheap, quick and easy" way to do high power SMPS's? in Power Electronicsthe beauty of the two switch - two diode - forward converter, is that it is very easy to get going at full power, near 50% duty cycle a little bit...9 replies | 290 view(s)
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14th February 2020, 09:07Easy peasy replied to a thread The "cheap, quick and easy" way to do high power SMPS's? in Power Electronicshaving 4 oscillators, 90deg apart looks like a good idea ( single 555 osc with 4 connections to local boards ) - linking the comp pins would be...9 replies | 290 view(s)
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14th February 2020, 04:31Your ex0_isr_counter should be of int type and the new code should be4 replies | 202 view(s)
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14th February 2020, 01:10Easy peasy replied to a thread The "cheap, quick and easy" way to do high power SMPS's? in Power Electronicsthe circuit appears to be current mode already - just need to link the comp pins - for all stages to do the same current ... - - - Updated -...9 replies | 290 view(s)
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14th February 2020, 00:11Easy peasy replied to a thread The "cheap, quick and easy" way to do high power SMPS's? in Power Electronicsand if it's built symmetrically - the thermals will be even-ish too - but ...! how are you doing the volt feedback on each one ...? if one...9 replies | 290 view(s)
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13th February 2020, 23:09This is the trouble with not posting a full & accurate schematic - because with full information the fixes can be posted all at the same time - ...56 replies | 2933 view(s)
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13th February 2020, 11:24dead time or discharge resistor should be about 5% of the timing resistor, try 47 ohm, 100 ohm - and a large soft start cap ... and a 40W...56 replies | 2933 view(s)
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13th February 2020, 08:54OK, so, 50kHz = 170mT pk, 20kHz = 425mT - so hopefully your freq is 50kHz, and the dead time is 1uS at least ...?56 replies | 2933 view(s)
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13th February 2020, 05:32What is the core size of the Tx? - the blocking cap ( which would be quite large in this case ) stops DC current saturating the Tx - if you...56 replies | 2933 view(s)
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12th February 2020, 23:00are you talking amplifying a signal using a separate power source - or - do you only have uV and want to convert it to mV ... ?48 replies | 904 view(s)
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12th February 2020, 22:34that's what tape is for ... - - - Updated - - - e.g. kapton, polyester ...7 replies | 287 view(s)
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12th February 2020, 20:39optimal solution is either litz or tape type copper - e.g. 0.1mm thick ribbon - insulated, 6mm wide - this has more "skin" to carry AC...7 replies | 287 view(s)
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12th February 2020, 20:27have you got twice the turns on the pri for 24V?, also an 100W light buld is a bad idea unless you have a slow soft start - or a soft 24V supply ...56 replies | 2933 view(s)
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12th February 2020, 20:07Yes - but you are measuring the high side fet gate with respect to gnd - so you see Vrail ( 24V ) + V boobstrap ( 15V ) = 39V to see...56 replies | 2933 view(s)
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12th February 2020, 19:04Are you using a DC blocking cap and the same transformer? if no cap and same transformer then the magnetising current will peak up for 24V and...56 replies | 2933 view(s)
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12th February 2020, 11:26best to show your ckt ... - - - Updated - - - at 24 volt you may be killing your fets with over current ...56 replies | 2933 view(s)
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12th February 2020, 08:14On the board, the Vss, Vo (Contrast adjust) and RW pins are shorted and grounded. They are hardwired. This is my new code and it still has the...12 replies | 550 view(s)
About Easy peasy
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- founder MagnetPowerNZ Ltd
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- Melbourne
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- engineer
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