DESCRIPTION. The LM and the LM are general purpose dual operational amplifiers. The two amplifiers share a common bias network and power. CC Datasheet, CC PDF, UPCC. Part Number, CC. Manufacturer, NEC. Short Description, UPCC. Long Description, www. CC UPCC Components datasheet pdf data sheet FREE from Datasheet (data sheet) search for integrated circuits (ic).

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Do you already have an account? Nov 13, 5.

Jul 17, 22, 1, Can we use a tristate buffer in place of voltage level shifter? Nov 13, 6. This will help prevent confusion since replying members will be less likely to be confused. Your name or email address: A Non-Invasive Glucose Sensor Researchers believe that sweaty armpits may be the answer to both detecting and controlling diabetes. Nov 13, 9. First off it was probably not necessary to start a new thread since members are going to be a bit confused between the two.

This action pulls the positive end of the transformer secondary supplying the 15V DC down slightly. dztasheet

C1458C Datasheet PDF

With an increase in the base drive applied to Q, it begins to turn on harder. This results in a restoration of the -8volt output so that the droop due to the increased load is cancelled. Can U use 2 transistors in place of a relay to switch 2 different voltages Posted by icadj in forum: I started reviewing the lessons on op amps on this site because I think the problem with my Tek scope power supply is a bad op amp.


Apr 5, 18, 3, Jan 28, 9, Posted by spidermanIIII in forum: I really do not care if one of these is the best choice. As the -8volts drops the positive input to the opamp begins to go positive. This causes the output of the opamp to go positive which drives the base of transistor Q which in turns drives the base of Q positive.

Nov 13, 8. I went out a purchased a couple of op amps from Radio Shack and built a comparator like the first one on this page. As for the power supply, the opamp is actually being operated as an opamp rather than a comparator.

That can be remedied. Can I use a flyback transformer in a forward topology? Would one of these work for now? It is a CC. But would want to run ti by the folks here anyway. Nov 13, 2. Oct 29, 7, 3, Bottom line, compare the datasheets of the op amps for compatability.

(Datasheet) CC pdf – UPCC (1-page)

I can’t seem to find a datasheet for a CC, but the pinouts on the schematic agree with the above opamps. Here are my voltage readings for the -8 section. Nov 13, 3. I am not great at reading datasheets. I would have to know the part number to answer your question with certainty.

Nov dxtasheet, Nov 13, 1. Quote of the day. No, create an account now.

CC pdf Datasheet P1 Part Num IC-ON-LINE

If the opamp is in datashedt socket, why not try testing it on the bench? Actually the voltage measurement I would like you to make is the voltage across the terminals of the capacitor. Yes, my password is: If you imagine that the load on the -8V output increases then the -8volt output would drop slightly toward 0v. Spinaker, You will notice that I have merged the newer post with the older post since the second thread was a continuation of the first.


Nov 16, 1, What voltage do you datashret across capactors C and C? In the meantime, I will use the values you have measured. I could probably ramp the voltages up to 15 VDC if that is recommended. I am trying to fix my Tek scope power -8 and power c1458v.

C1458C Datasheet

Nov 13, 4. Discussion in ‘ General Electronics Chat ‘ started by spinnakerNov 13, The trick to the -8volt regulator stage is that Q is acting to control the positive-most end of the 15V secondary transformer winding so that it is exactly 7 volts positive when measured with respect to ground. You May Also Like: You dagasheet find that one or more of the transistors connected to the output is shorted.

That is because in both cases the ground reference is not a direct connection to ground.