Pin 6 would be the pin for the connection missing a pin number.
Pin 5 is also not shown, but is the junction of internal voltage divider, so does not need to be used in this case.
Cheers,
Search found 1582 matches
- Mon Mar 01, 2021 8:19 pm
- Forum: General Discussion
- Topic: 555 timer missing pin
- Replies: 3
- Views: 45
- Mon Nov 02, 2020 8:34 pm
- Forum: General Discussion
- Topic: Power Supply for mains circuit _linear or switch mode
- Replies: 7
- Views: 1048
Re: Power Supply for mains circuit _linear or switch mode
Does not compute!The load is 15 ohms at 120 Volts and 12 amps DC.
120V / 12A = 10 Ohms
Or, if the 15 Ohms is correct, then 12Amps is wrong; like JWax said.
- Mon Nov 02, 2020 2:13 pm
- Forum: General Discussion
- Topic: Power Supply for mains circuit _linear or switch mode
- Replies: 7
- Views: 1048
Re: Power Supply for mains circuit _linear or switch mode
I have never of anything needing 110VDC at 12 Amps. (probably why no vendor makes one)
And not safe unless isolated from mains.
What is the load?
And not safe unless isolated from mains.
What is the load?
- Mon Nov 02, 2020 10:11 am
- Forum: General Discussion
- Topic: Power Supply for mains circuit _linear or switch mode
- Replies: 7
- Views: 1048
Re: Power Supply for mains circuit _linear or switch mode
How are you regulating the output to 110VDC? The peak of 110VAC is 155V. At no load that is what the filtered DC will be. As load current increases, output ripple voltage increases as the filter capacitor supplies the current between the input voltage peaks. The input current is zero till the input ...
- Thu Sep 10, 2020 7:39 am
- Forum: General Discussion
- Topic: ADR421 Vref IC Low Short-Circuit Current!
- Replies: 10
- Views: 1416
Re: ADR421 Vref IC Low Short-Circuit Current!
Not getting 10mA (max) into a load is a problem. It looks like IC fails in this respect.
Getting a smaller short circuit current is a good thing. Why are you worried that? When output voltage is forced to zero (by short) the IC probably limits the current so it does not destroy itself.
Getting a smaller short circuit current is a good thing. Why are you worried that? When output voltage is forced to zero (by short) the IC probably limits the current so it does not destroy itself.
- Tue Sep 08, 2020 2:17 pm
- Forum: General Discussion
- Topic: ADR421 Vref IC Low Short-Circuit Current!
- Replies: 10
- Views: 1416
Re: ADR421 Vref IC Low Short-Circuit Current!
Last item in specs for each part number. In this case on page 5 of 24. And resolved subject line problem in post 2.Where are you seeing 27mA in the spec.
- Mon Sep 07, 2020 8:11 pm
- Forum: General Discussion
- Topic: ADR421 Vref IC Low Short-Circuit Current!
- Replies: 10
- Views: 1416
Re: ADR421 Vref IC Low Short-Circuit Current!
Now I missed a line on spec sheet - Load Regulation, Conditions column; which shows 0ma to 10mA.
Where did you get the IC? Discount places sell parts that failed some test but still function.
Where did you get the IC? Discount places sell parts that failed some test but still function.
- Mon Sep 07, 2020 3:13 pm
- Forum: General Discussion
- Topic: ADR421 Vref IC Low Short-Circuit Current!
- Replies: 10
- Views: 1416
Re: ADR421 Vref IC Low Short-Circuit Current!
The spec sheet title is ADR421. The "BRZ" on your parts might mean low power. A 1k load is a ridiculously heavy load for a precision reference. It is not a power supply regulator. -------------------------------------------------------- Yes, probably not oscillating. Did you place 2 small capacitors...
- Mon Sep 07, 2020 2:31 am
- Forum: General Discussion
- Topic: ADR421 Vref IC Low Short-Circuit Current!
- Replies: 10
- Views: 1416
Re: ADR421 Vref IC Low Short-Circuit Current!
The spec sheet I'm looking at https://www.analog.com/media/en/technical-documentation/data-sheets/ADR420_421_423_425.pdf says 27mA is typical, not minimum. There is no minimum. So, the IC you got limits to a lower current to protect itself when a short is detected. A short is an error condition. Why...
- Tue Jul 28, 2020 7:33 pm
- Forum: General Discussion
- Topic: Paralleling circuit breakers
- Replies: 13
- Views: 2152
Re: Paralleling circuit breakers
Nonsense, he said non equal current rated breakers.
And even if they were equal breakers, and the wires were just large enough not to overheat, they are not a load balance resistor.
And even if they were equal breakers, and the wires were just large enough not to overheat, they are not a load balance resistor.
- Fri Jul 24, 2020 1:17 pm
- Forum: General Discussion
- Topic: Paralleling circuit breakers
- Replies: 13
- Views: 2152
Re: Paralleling circuit breakers
The resistances of the breakers is not directly related to current ratings. So, for example, with a 60A load the 15A breaker may pass 20A. The 15A breaker will trip. That leaves the 50A breaker with the whole 60A, it will trip too. Equal rating, same part number breakers will share the load more eve...
- Thu Jun 18, 2020 10:16 pm
- Forum: General Discussion
- Topic: 4G LTE Interference on OTA Antenna TV
- Replies: 16
- Views: 2605
Re: 4G LTE Interference on OTA Antenna TV
Please read the posts before answering! This discussion was about towers on insulators. Which means RF hot tower. A hot tower needs a spark gap for lightning protection without shorting the signal. My mention of spark gap a couple posts back was for hot tower, obviously a non-hot antenna support tow...
- Thu Jun 18, 2020 11:24 am
- Forum: General Discussion
- Topic: 4G LTE Interference on OTA Antenna TV
- Replies: 16
- Views: 2605
Re: 4G LTE Interference on OTA Antenna TV
The tower you say is 600ft not 2000ft. It supports other antennas so is unlikely insulated at the base. The mountain it is on is not relevant.
The big tube likely is waveguide, or coax.
The big tube likely is waveguide, or coax.
- Thu Jun 18, 2020 10:23 am
- Forum: General Discussion
- Topic: 4G LTE Interference on OTA Antenna TV
- Replies: 16
- Views: 2605
Re: 4G LTE Interference on OTA Antenna TV
A 1/2 wave antenna for an AM broadcast station could more than 400 ft.
(is 2000ft an over estimate?)
(is 2000ft an over estimate?)
- Thu Jun 18, 2020 10:06 am
- Forum: General Discussion
- Topic: Voltage and Current
- Replies: 5
- Views: 1274
Re: Voltage and Current
Electron flow, outside the source - electrons flow from the negative terminal through the external circuit to the positive terminal of the source. Inside the source the electrons are forced toward the negative terminal. The extra electrons at the negative terminal is what made it negative in the fir...