Sign up or log in Sign up using Google. Pardon my confusion - there is no difference between the circuits besides that I merely swapped one chip with another, and V- is at ground I am operating single supply. Post as a guest Name. Home Questions Tags Users Unanswered. Sign up using Facebook.
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The output can't swing to the negative rail either- so it ends up being a kind of class A amplifier biased by the output not-quite-railing at around a volt.
Through my reading, I learned there are much better op-amps to use for audio applications than asuch as the TL Why can't I swap a TL with a ? GeorgeHerold Ah, inquisitive, aren't we? To get rid of the clipping low volume maybe you could reduce the gain of the first gl071 and let the LM do more. Sign up using Facebook.
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Now, in light of this conversation, I understand why it shouldn't. I agree, but MJXS had ttl071 working! Well, I'll just plug them in swapping the TL in where the is without changing the circuit otherwise and My question is, why can the have its NI input hooked to ground and still function fine, but the TL needs a "typical" mid-supply bias?
MJXS 71 1 3 Pardon my confusion - there is no difference between the circuits besides that I merely swapped one chip with another, and V- is at ground I am operating single supply. I can confirm it does indeed work to some limited degree - the gain settings are very specific on the possibly as a result. I constructed this circuit as shown for use as a simple headphone amplifier.
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TL JFET Op Amp IC | NightFire Electronics LLC
George Herold 4, 1 12 Without a schematic, and one which accurately reflects what was actually built, it is difficult to comment on. Well, Johnathan Swift had it right when he referred to "the yl071 perversity of inanimate objects. Biasing the non-inverting input to mid supply was the right thing to do. Maybe there was enough current leaking out of the inverting input to bias the the input coupling cap to some value that let it run.
Home Questions Tags Users Unanswered. The common mode range of a only goes to within a couple volts of the negative rail, below that the current sinks that bias the differential front end will no longer function.
So, imagine my gaiety when I discovered a set of TLs in my parts box. Is this because of the larger offset voltage t,071 the TL because it's harder to match device parameters in a FET?
Sign up or log in Sign up using Google. The video shows an electret microphone producing some sort of response with no excitation, too.
Both of those parts suck almost equally for single supply use. The bias current may give it a bit of offset that allows it to produce both halves of the waveform to some degree, if the input voltage is small and the pot is turned towards the high gain end.