Philip Bragg
@synx508.bsky.social
Technology person, vintage synth and electronic test equipment enthusiast & restorer.
I'd probably also damp the coil quite heavily with a resistor because you wouldn't want it ringing and smearing the difference between the two pulse lengths.
November 16, 2025 at 8:51 AM
I'd probably also damp the coil quite heavily with a resistor because you wouldn't want it ringing and smearing the difference between the two pulse lengths.
For a single coil I'd probably drive with an H bridge, to get full voltage swing in both directions. Either a dedicated IC or just two complementary pairs of whatever transistor of MOSFET you like.
November 16, 2025 at 8:49 AM
For a single coil I'd probably drive with an H bridge, to get full voltage swing in both directions. Either a dedicated IC or just two complementary pairs of whatever transistor of MOSFET you like.
Could you not have one coil with a tap point, driven ether from the tap point or the full coil length depending on which inductance you wanted? Or one coil where you switch in a capacitor with a transistor to tune it downwards, you can use open collector for this…
November 16, 2025 at 8:31 AM
Could you not have one coil with a tap point, driven ether from the tap point or the full coil length depending on which inductance you wanted? Or one coil where you switch in a capacitor with a transistor to tune it downwards, you can use open collector for this…
so I guess indirectly yes…
November 15, 2025 at 10:16 PM
so I guess indirectly yes…
No, because there are too many letters in the word.
November 15, 2025 at 10:16 PM
No, because there are too many letters in the word.
Those X's got a bit carried away with the last word.
November 15, 2025 at 10:11 PM
Those X's got a bit carried away with the last word.
Earlier this year I watched a video about domestic heating in Japan and it's so different and in many ways sensible, in that rooms or parts of rooms are heated as required. It's not something you can set and ignore and maybe that's important.
November 15, 2025 at 1:37 PM
Earlier this year I watched a video about domestic heating in Japan and it's so different and in many ways sensible, in that rooms or parts of rooms are heated as required. It's not something you can set and ignore and maybe that's important.
Until I saw a hedgehog leap through a cat flap then forward-roll the landing into a run I assumed Sonic the Hedgehog was all lies and that hedgehogs were restful, laid-back creatures. I've a feeling they'd be bouncing the Audi off its rev limiter.
November 14, 2025 at 6:03 PM
Until I saw a hedgehog leap through a cat flap then forward-roll the landing into a run I assumed Sonic the Hedgehog was all lies and that hedgehogs were restful, laid-back creatures. I've a feeling they'd be bouncing the Audi off its rev limiter.
Always annoyed me that there was no "Stop this nonsense" tickbox on the ballot paper for these.
November 13, 2025 at 12:46 PM
Always annoyed me that there was no "Stop this nonsense" tickbox on the ballot paper for these.
I think it's painted wood.
November 10, 2025 at 10:15 PM
I think it's painted wood.
Day one of week three of this one week bathroom replacement and it's 7pm after a day of drilling and hammering and the bathroom chap is still outside in his van making the occasional clonking noise, opening and closing the doors.
November 10, 2025 at 7:12 PM
Day one of week three of this one week bathroom replacement and it's 7pm after a day of drilling and hammering and the bathroom chap is still outside in his van making the occasional clonking noise, opening and closing the doors.
Today and PM on R4 got the dumbing down treatment several years before that and it was obvious from the people who left that this was also political. Not *party* political, but the sort of politics that had given NewsCorp its particular smell back in the 1980s where what they don't say matters most.
November 10, 2025 at 4:17 PM
Today and PM on R4 got the dumbing down treatment several years before that and it was obvious from the people who left that this was also political. Not *party* political, but the sort of politics that had given NewsCorp its particular smell back in the 1980s where what they don't say matters most.
When they gutted local radio it was political, local BBC presenters had made a difference at the ballot box and this must not be permitted, so Davie decided that LR wouldn't have anyone with the journalistic skills necessary to pull that off again. At which point you have to ask why it exists at all
November 10, 2025 at 4:13 PM
When they gutted local radio it was political, local BBC presenters had made a difference at the ballot box and this must not be permitted, so Davie decided that LR wouldn't have anyone with the journalistic skills necessary to pull that off again. At which point you have to ask why it exists at all
I can't think of a recent or even not-so-recent DG who had the BBC's independence and long-term future in mind. Managed decline with a a chaser of "Oops, we've just done this absolutely unnecessary thing that has made a US president sue us and now we're no longer trustworthy or financially viable"
November 10, 2025 at 2:35 PM
I can't think of a recent or even not-so-recent DG who had the BBC's independence and long-term future in mind. Managed decline with a a chaser of "Oops, we've just done this absolutely unnecessary thing that has made a US president sue us and now we're no longer trustworthy or financially viable"
It's not that it's good or bad, it's a necessary thing if you want to get support from people who rank it so highly that they won't listen to or attempt to comprehend what's being said with confidence.
November 10, 2025 at 1:05 PM
It's not that it's good or bad, it's a necessary thing if you want to get support from people who rank it so highly that they won't listen to or attempt to comprehend what's being said with confidence.
I think that's missing the other thing that Farage does and shares with Zack Polanski and (in the past) Boris Johnson, it's speaking with confidence. Some people latch onto that without feeling the need to listen more deeply. All three could be saying anything and get support.
November 10, 2025 at 12:47 PM
I think that's missing the other thing that Farage does and shares with Zack Polanski and (in the past) Boris Johnson, it's speaking with confidence. Some people latch onto that without feeling the need to listen more deeply. All three could be saying anything and get support.
I can't imagine me trusting him but I know that confidence tricks work. Some people are particularly susceptible to them. Some people even seek them out because they've convinced themselves that they're beneficial. People vary and sometimes you won't be able to understand their reasoning.
November 10, 2025 at 12:33 PM
I can't imagine me trusting him but I know that confidence tricks work. Some people are particularly susceptible to them. Some people even seek them out because they've convinced themselves that they're beneficial. People vary and sometimes you won't be able to understand their reasoning.
Hove you made a typo?
November 10, 2025 at 12:13 PM
Hove you made a typo?
I've no objections to that, really, I like the impressionistic feel of it. Well, maybe not like but it's better than 1 Mill Lane, Taplow's heritage crime.
November 8, 2025 at 8:21 PM
I've no objections to that, really, I like the impressionistic feel of it. Well, maybe not like but it's better than 1 Mill Lane, Taplow's heritage crime.