O
[email protected]
- Jan 1, 1970
- 0
Hi,
I am trying to build the circuit in Figure 1 in this link:
http://www.taosystem.com/products/HWCVA-TN.pdf
I want to get Vw= 0.4V or higher (0.4-0.8 V). Rw has a small value
between 4-8 Ohms. The idea of the circuit that when an air flow goes
by the hot wire resistance Rw, the hot wire resistance decreases,
while keeping the voltage constant across Rw (Vw should stay
constant).
My problem is to choose an Op Amp that will keep the voltage constant
across Vw, while giving an output current of over 80mA. I tried many
Op-amps for that matter, even the high output power op amps but
nothing works for that design. Would someone help me with that.
Thanks
I am trying to build the circuit in Figure 1 in this link:
http://www.taosystem.com/products/HWCVA-TN.pdf
I want to get Vw= 0.4V or higher (0.4-0.8 V). Rw has a small value
between 4-8 Ohms. The idea of the circuit that when an air flow goes
by the hot wire resistance Rw, the hot wire resistance decreases,
while keeping the voltage constant across Rw (Vw should stay
constant).
My problem is to choose an Op Amp that will keep the voltage constant
across Vw, while giving an output current of over 80mA. I tried many
Op-amps for that matter, even the high output power op amps but
nothing works for that design. Would someone help me with that.
Thanks