Search results

are you 100% sure? control pins of sw cannot be connected altogether... two by two yes.

so .. we probably got the same age ... 54 in a few days... I'm waiting for a used ISA215 board from a french forum member. if , by accident , somebody had one, here, I'll be very happy to have a glance on it ... I saw so many defect in embeded electronics because of mechanic flexing mode...

HI Kiev If you get a look on the schematics I posted, you will see that wether a it is a zener diode , it is connected at the 4066 input. saying it should clamp voltage delivered by transformer , on only _one_ wave. don't know why. but for sure , only diodes and transistor are integrated in...

need to know what's is the circled sot23, and where are connected the two resistance

done.... almost

Hi all I've started to sketch the schematic with the data I can extract from your pictures. It is clear for me now how this circuitery works : on the right you have an OpAmp that manage a Gain and high impedance input , and also a low impedance output (as an Opamp should do) the analog...

to be perfectly clear TL494 is an old IC, used WW , but performance are nowadays outdated . requency change with temperature(4) ΔTA = MIN to MAX 10 Hz/kHz means for industrial version (I) -40 to +85 , frequency drift is for a 100Khz : 1khz if you had ppm from resistor involved in...

ah ok ... ok ,I beilived you talked about a specific capacitor technology. So... during the chase against a root cause , we must be very carefull... What is very important is to stay focus on the REAL conclusion you have... Using a heat gun isn't very demonstrative because... You cannot say...

it is a classical "interblocking" process in automotive industry. I don't know what stands for "hybrid capacitor"

got it. for sure!

almost all of them. The aging is sometime also a subject : simply leaving a part in tube make it wear out after years .. for example if one day you order MSL 4 devices you will receive a "dry pack" and you have to fullfill a baking procedure before solder them on a board. for our subject I...

another ressource I found , it is interesting because it explain the way a signal can be modulated to feed the transformer and how it is detected : https://www.analog.com/en/resources/analog-dialogue/articles/synchronous-detectors-facilitate-precision.html see § Practical Lock-In Implementations

if you're interested about magnetic feedback you can find a white paper here : https://ieeexplore.ieee.org/document/4729638 I can send it to you by PM if you don't want to sign in

Hi Folks I would like to reverse this little board. I'm a skilled electronic engineer that bough a Ion (Peugeot) same as Imiev I don't have yet the issue (crossing fingers). The subject starts to be sensitive in France as cars are getting older. Here peoples are only implementing the "resistor...

Hi Kiev thx for for your quick answer. As I'm new here I was affraid, I didn't want to hurt anybody (and still don't want to) . I saw the very beguining of the thread with all data links wrapped-up in a post : very effective thanks As you suggested , I'll start a thread about this topic best regard

Hi folks sorry for my rough english, I'm french and I don't use a translator. I'm a skilled electronic engineer . I bough a Peugeot Ion (sale as Czero or Imiev) and I enjoy it. I don't have (yet) this issue discussed here. But I'm curious. I found some picture and diagram here from people...