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Low-leakage triac or solid-state relay
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perieanuo:

--- Quote from: CodyDowling on December 13, 2018, 03:15:20 am ---
--- Quote from: perieanuo on December 09, 2018, 12:39:03 pm ---Hi,
Do you mentioned frequency involved?
Regards,pierre
...


--- End quote ---

I didn't but, ideally, I'd like to be able to get very high impedance up to 100kHz. The RF components seem like they shouldn't start really leaking until much higher, so I thought that might be a good jumping off point.

--- End quote ---
Ok.
So ssr is the only option, reed is too slow.me I always prefer at home building my own ssr takes some minutes but sure it's better than chinese ebay ones.at work, sil types for reasonable power or bigger ones for big heaters.
For ssr building the posts before explains very well, I won't repeat, just saying I use always moc's with zero switching capabilities.
Tell us what your work did in the end.
Regards,pierre


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CodyDowling:

--- Quote from: perieanuo on December 13, 2018, 08:39:59 am ---Ok.
So ssr is the only option, reed is too slow.me I always prefer at home building my own ssr takes some minutes but sure it's better than chinese ebay ones.at work, sil types for reasonable power or bigger ones for big heaters.
--- End quote ---
Forgive me, but- may I assume that by "sil" you mean silicon? or maybe single in-line?


--- Quote from: perieanuo on December 13, 2018, 08:39:59 am ---For ssr building the posts before explains very well, I won't repeat, just saying I use always moc's with zero switching capabilities.
...

--- End quote ---

I definitely will update with what I come up with. When you mentioned "... the posts before." Did you mean the responses in this thread or others somewhere here on the Forums?
perieanuo:

--- Quote from: CodyDowling on December 13, 2018, 09:53:07 pm ---Forgive me, but- may I assume that by "sil" you mean silicon? or maybe single in-line?

I definitely will update with what I come up with. When you mentioned "... the posts before." Did you mean the responses in this thread or others somewhere here on the Forums?

--- End quote ---
sil like single in line like S202S12 ssr
sorry, the schematics for ssr are from other threads (the ones with optotriac moc3020+triac+stuff), but watch to choose a zero-switching optotriac...
Zero999:

--- Quote from: CodyDowling on December 13, 2018, 03:15:20 am ---
--- Quote from: perieanuo on December 09, 2018, 12:39:03 pm ---Hi,
Do you mentioned frequency involved?
Regards,pierre
...


--- End quote ---

I didn't but, ideally, I'd like to be able to get very high impedance up to 100kHz. The RF components seem like they shouldn't start really leaking until much higher, so I thought that might be a good jumping off point.

--- End quote ---
I'm confused.

Do you want to switch 100kHz current with this relay? Or do you just need it to not leak a 100kHz applied between the control and load circuits?

A TRIAC is no good for switching a 100kHz current and MOSFETs will leak a considerable amount, at that frequency. You need a reed relay to switch that frequency current.
perieanuo:

--- Quote from: Hero999 on December 14, 2018, 01:44:21 pm ---
--- Quote from: CodyDowling on December 13, 2018, 03:15:20 am ---
--- Quote from: perieanuo on December 09, 2018, 12:39:03 pm ---Hi,
Do you mentioned frequency involved?
Regards,pierre
...


--- End quote ---

I didn't but, ideally, I'd like to be able to get very high impedance up to 100kHz. The RF components seem like they shouldn't start really leaking until much higher, so I thought that might be a good jumping off point.

--- End quote ---
I'm confused.

Do you want to switch 100kHz current with this relay? Or do you just need it to not leak a 100kHz applied between the control and load circuits?

A TRIAC is no good for switching a 100kHz current and MOSFETs will leak a considerable amount, at that frequency. You need a reed relay to switch that frequency current.

--- End quote ---
As I already excluded reed in my earlier post (I understood the signal needed to be switched at high freq,reed can't do quick, not that the signal itself has 100k).
I give up...
In fact hero999 is right if signal is HF and commutation speed is slow, very slow.
I need a coffee :) and clearer specs, which f for signal,which bandwidth for signal to be commuted...


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