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AC switch w 3Vdc control signal, are there such componant or circuit?

Question asked by on Oct 29, 2011
Latest reply on Nov 1, 2011 by



I'm looking analog ac switch that controled only w 3Vdc signal

- the ac switch can pass (the control signal is around 500mVdc) around 5W power (20Vac pp) w minimal Rdson (up to 200mOhm)@ 500KHz

- the ac switch can block (using the 3Vdc control signal) 25Vac pp (50mA) @ around 10MHz (as if it was 10Kohm resistor)


Does such element or configurtation exsits and if not what can i do?

I though about:

- antiseriel Fets but i'm not sure the cap @ 10Mhz won't short the Fet and not do the blocking

- relay i'm not sure its not expansive and if it is possible to find some low profile relay

- Opto Mos , i'm not sure it can pass power

- maybe some linear element that i could have samples for my project & test it

- trieac i'm same as relay


attached conceptual circuit the 50Ohm has no meaning just the switch concept


Pls i would be glad if someone could advice me