I included the circuit and nobody says anything?

What do want anyone to say? I can tell you that the resistor is on the collector to V+, not on the emitter to ground.

 

Even after saying my problem went way I was still asked for a schematic.....just wondered why is all

 

Even after saying my problem went way I was still asked for a schematic.....just wondered why is all

Because without the schematic it is not possible to concur that the *real* problem went away, not just the symptom.

ak

 

Actually the real problem didn't go away, I made a mistake in my assumption lol

 

I have the output of my op amp TLO82 pin one feeding into the base of my 2N3904 via a 1K resistor
the output from the op amp is fine on the op amp side of the resistor but is extremely tiny on the transistor side, I
assume I need to pull something somewhere?

basically how do I interface an op amp with a transistor?

Neil.

The 2N3904 is a BJT NPN Transistor, so the base-emitter junction is similar to a diode with VR of about 0,75V depending of the point of work alias IBase current. The TL082 output is a NPN-PNP totem pole.
A resistor between the output of TL082 and base of transistor 2n3904 is a must and the value depends by the desired collector current (max 200mA) which is IBase*hFE.
The hFE (DC gain) depends of the collector current and is typically equal to 100 with ICollector = 10mA or 30 with IC of 100mA. For example, you want 100mA collector current and the output of TL028 is 5V, the base resistor value is calculated : (TL_Out-Vbe)/IBase; Es: (5-0,85)/0,0033 = 1K2 ohm.
In other words, is normal that the measured VBE is about equal to the VR and in this example 0,85Vdc

 

We don't call them trannies. We call them transistors

That is correct! A trannie is a boy that dresses in girl's clothes!

 

That is correct! A trannie is a boy that dresses in girl's clothes!

Unless your talking about transistors in an affectionate manner

 

And for the record , a boy wearing girls clothes is called a transvestite

 

Unless your talking about transistors in an affectionate manner

Me and my transistors have a strict platonic relationship.
The only trannies I know of are in my vehicles (also platonic).

 

Me and my transistors have a strict platonic relationship.
The only trannies I know of are in my vehicles (also platonic).

Lol.....details are not required

 

And for the record , a boy wearing girls clothes is called a transvestite

Flux... do me a favor... go to google.com, set it into image search, and type "tranny<Enter>" ... see what pops up...

 

Flux... do me a favor... go to google.com, set it into image search, and type "tranny<Enter>" ... see what pops up...

I'm not the one having an issue with this......do it yourself big boy ;-)