On 4/23/2017 9:20 PM, amdx wrote:> On 4/23/2017 7:27 PM, rickman wrote: >> On 4/23/2017 6:28 PM, amdx wrote: >>> On 4/23/2017 3:42 PM, rickman wrote: >>>> On 4/23/2017 4:03 PM, amdx wrote: >>>>> On 4/23/2017 2:39 PM, rickman wrote: >>>>>> On 4/22/2017 2:01 PM, amdx wrote: >>>>>>> On 4/21/2017 8:24 PM, rickman wrote: >>>>>>>> On 4/21/2017 1:53 PM, amdx wrote: >>>>>>>>> On 4/21/2017 12:25 PM, rickman wrote: >>>>>>>>>> >>>>>>>>>> BTW, if you are only interested in a given voltage range at the >>>>>>>>>> output >>>>>>>>>> of the diode circuit, you can connect the meter ground leg to the >>>>>>>>>> adjustable voltage source (a pot) and make the zero current >>>>>>>>>> point on >>>>>>>>>> the meter correspond to a 3 Vrms input and the max reading on the >>>>>>>>>> meter face correspond to a 5 Vrms input. Then you have the >>>>>>>>>> entire >>>>>>>>>> range of the meter to measure the Q more accurately. There is no >>>>>>>>>> reason why the low end has to correspond to a Q of 1. >>>>>>>>>> >>>>>>>>> If biasing the diode detector up by 3 volts will make it more >>>>>>>>> linear on >>>>>>>>> the bottom end, That's good. I can bias the other end of my meter >>>>>>>>> up by >>>>>>>>> three volts to remove the 3 volts. The Q meter already is setup >>>>>>>>> with an >>>>>>>>> adjustable bias on the negative side of the meter. >>>>>>>>> I'll keep this in mind. >>>>>>>>> I would just as soon keep the zero to 250 scale. >>>>>>>> >>>>>>>> What I am talking about doesn't affect the diode circuit, it >>>>>>>> changes >>>>>>>> the range of your meter range from 0-5 to 3-5 or whatever >>>>>>>> numbers you >>>>>>>> want. Because you can change your power input level to bring the >>>>>>>> output of the circuit to whatever level you want there is no >>>>>>>> reason to >>>>>>>> work with the low end of the output range, so no need to linearize >>>>>>>> the >>>>>>>> entire output range. Besides, your circuit is pretty durn >>>>>>>> linear as >>>>>>>> it is. >>>>>>>> >>>>>>>> If you want to keep the 0 to 250 scale, consider using an adder >>>>>>>> (+250 >>>>>>>> say) before you use the multiplier. That would make the true Q >>>>>>>> scale >>>>>>>> 250 to 500. >>>>>>>> >>>>>>> I'll keep that as a possibility. >>>>>>> >>>>>>> Earlier in our discussion there was a question about why have the >>>>>>> termination resistor. I turns out to be important if the circuit is >>>>>>> capacitively coupled. It doesn't work without a termination. I'm >>>>>>> now using an 11K termination after the coupling capacitor, with a >>>>>>> 500 >>>>>>> ohm source resistance. I don't know how the termination value >>>>>>> affects >>>>>>> circuit operation. >>>>>> >>>>>> I can't say I follow the need for a termination resistor after the >>>>>> coupling cap. What does it do for you other than raise the corner >>>>>> frequency of the high pass filter? >>>>>> >>>>> I'll get back to you on that, When I removed it earlier, the >>>>> detector >>>>> output dropped to zero. I have disassembled the detector, when I >>>>> put it >>>>> back together, I'll verify it. >>>>> Btw, I have tried several emails to you, they all bounced. I have >>>>> other >>>>> gmail accounts I send to, they are fine, it is only your address that >>>>> I have a problem with. ¯\_(ツ)_/¯ >>>> >>>> The problem is not gmail, it is my arius.com server rejecting your >>>> emails because they are on spam lists. You need to deal with the spam >>>> listing problem. I've given you info about that and it is in the >>>> bounce reply you get. btw, you shouldn't be emailing me at gmail. I >>>> gave you an arius.com address to use. >>>> >>> I tried both. >>> I looked at what you posted, I had 5 items from 2008 and before. Do you >>> think that is the problem? >>> >>> Here's what the page gave me. >>> >>> Summary information for me. >>> Note: Times shown are for the latest entry only! >>> Found 4 network entries and 0 host/domain entries. >>> >>> Problem Entries, (listings will cause email problems.) >>> 5 "Escalated" entries [16:30:03 21 Nov 2008 GMT+00]. >>> >>> Usage classification (only important if you run your own mailserver.) >>> 1 "DUHL" entries [13:59:07 19 Sep 2004 GMT+00]. >>> 1 "exDUHL" entries [14:05:20 19 Sep 2004 GMT+00]. >>> Note: Active "exDUHL" entries mean that the IP/Network has been >>> unblocked for some or all IPs from the DUHL. >> >> I don't know, but doesn't the page indicate a way to get taken off the >> blacklist? Either way you should complain to your hosting provider. >> You are sharing a server and someone is using it to send spam, >> although that might be long ago. >> >> This is what I see when I check the email you forwarded to me... >> >> Problem Entries, (listings will cause email problems.) >> 85 "Spam" entries [02:08:44 20 Apr 2017 GMT+00]. >> 1 "Virus" entries [20:38:42 21 Nov 2016 GMT+00]. >> >> http://www.sorbs.net/lookup.shtml? 64.8.71.112 >> > > That is not my IP, that is the example they use on their site.Is it not *your* IP address, it is the IP address of your *email server*. Here is what shows up in the emails you sent me. Received: from smtp.knology.net (smtp.knology.net. [64.8.71.112])>> You ask for your IP to be delisted, but if the spam continues it will >> be put back on. >> >> Clearly there is an ongoing problem with your shared server hosting. > > You're using info from the wrong IP. > >> Open a ticket with your hosting support and send them the bounce >> messages.You can look into this or not. Read the bounce message and use the delist button on the web page after you create an account. Then contact your hosting provider. -- Rick C
Improving my best diode detector
Started by ●April 19, 2017
Reply by ●April 24, 20172017-04-24
Reply by ●April 24, 20172017-04-24
On 4/24/2017 12:40 AM, rickman wrote:> On 4/23/2017 9:20 PM, amdx wrote: >> On 4/23/2017 7:27 PM, rickman wrote: >>> On 4/23/2017 6:28 PM, amdx wrote: >>>> On 4/23/2017 3:42 PM, rickman wrote: >>>>> On 4/23/2017 4:03 PM, amdx wrote: >>>>>> On 4/23/2017 2:39 PM, rickman wrote: >>>>>>> On 4/22/2017 2:01 PM, amdx wrote: >>>>>>>> On 4/21/2017 8:24 PM, rickman wrote: >>>>>>>>> On 4/21/2017 1:53 PM, amdx wrote: >>>>>>>>>> On 4/21/2017 12:25 PM, rickman wrote: >>>>>>>>>>> >>>>>>>>>>> BTW, if you are only interested in a given voltage range at the >>>>>>>>>>> output >>>>>>>>>>> of the diode circuit, you can connect the meter ground leg to >>>>>>>>>>> the >>>>>>>>>>> adjustable voltage source (a pot) and make the zero current >>>>>>>>>>> point on >>>>>>>>>>> the meter correspond to a 3 Vrms input and the max reading on >>>>>>>>>>> the >>>>>>>>>>> meter face correspond to a 5 Vrms input. Then you have the >>>>>>>>>>> entire >>>>>>>>>>> range of the meter to measure the Q more accurately. There >>>>>>>>>>> is no >>>>>>>>>>> reason why the low end has to correspond to a Q of 1. >>>>>>>>>>> >>>>>>>>>> If biasing the diode detector up by 3 volts will make it more >>>>>>>>>> linear on >>>>>>>>>> the bottom end, That's good. I can bias the other end of my meter >>>>>>>>>> up by >>>>>>>>>> three volts to remove the 3 volts. The Q meter already is setup >>>>>>>>>> with an >>>>>>>>>> adjustable bias on the negative side of the meter. >>>>>>>>>> I'll keep this in mind. >>>>>>>>>> I would just as soon keep the zero to 250 scale. >>>>>>>>> >>>>>>>>> What I am talking about doesn't affect the diode circuit, it >>>>>>>>> changes >>>>>>>>> the range of your meter range from 0-5 to 3-5 or whatever >>>>>>>>> numbers you >>>>>>>>> want. Because you can change your power input level to bring the >>>>>>>>> output of the circuit to whatever level you want there is no >>>>>>>>> reason to >>>>>>>>> work with the low end of the output range, so no need to linearize >>>>>>>>> the >>>>>>>>> entire output range. Besides, your circuit is pretty durn >>>>>>>>> linear as >>>>>>>>> it is. >>>>>>>>> >>>>>>>>> If you want to keep the 0 to 250 scale, consider using an adder >>>>>>>>> (+250 >>>>>>>>> say) before you use the multiplier. That would make the true Q >>>>>>>>> scale >>>>>>>>> 250 to 500. >>>>>>>>> >>>>>>>> I'll keep that as a possibility. >>>>>>>> >>>>>>>> Earlier in our discussion there was a question about why have the >>>>>>>> termination resistor. I turns out to be important if the circuit is >>>>>>>> capacitively coupled. It doesn't work without a termination. I'm >>>>>>>> now using an 11K termination after the coupling capacitor, with a >>>>>>>> 500 >>>>>>>> ohm source resistance. I don't know how the termination value >>>>>>>> affects >>>>>>>> circuit operation. >>>>>>> >>>>>>> I can't say I follow the need for a termination resistor after the >>>>>>> coupling cap. What does it do for you other than raise the corner >>>>>>> frequency of the high pass filter? >>>>>>> >>>>>> I'll get back to you on that, When I removed it earlier, the >>>>>> detector >>>>>> output dropped to zero. I have disassembled the detector, when I >>>>>> put it >>>>>> back together, I'll verify it. >>>>>> Btw, I have tried several emails to you, they all bounced. I have >>>>>> other >>>>>> gmail accounts I send to, they are fine, it is only your address that >>>>>> I have a problem with. ¯\_(ツ)_/¯ >>>>> >>>>> The problem is not gmail, it is my arius.com server rejecting your >>>>> emails because they are on spam lists. You need to deal with the spam >>>>> listing problem. I've given you info about that and it is in the >>>>> bounce reply you get. btw, you shouldn't be emailing me at gmail. I >>>>> gave you an arius.com address to use. >>>>> >>>> I tried both. >>>> I looked at what you posted, I had 5 items from 2008 and before. Do you >>>> think that is the problem? >>>> >>>> Here's what the page gave me. >>>> >>>> Summary information for me. >>>> Note: Times shown are for the latest entry only! >>>> Found 4 network entries and 0 host/domain entries. >>>> >>>> Problem Entries, (listings will cause email problems.) >>>> 5 "Escalated" entries [16:30:03 21 Nov 2008 GMT+00]. >>>> >>>> Usage classification (only important if you run your own mailserver.) >>>> 1 "DUHL" entries [13:59:07 19 Sep 2004 GMT+00]. >>>> 1 "exDUHL" entries [14:05:20 19 Sep 2004 GMT+00]. >>>> Note: Active "exDUHL" entries mean that the IP/Network has been >>>> unblocked for some or all IPs from the DUHL. >>> >>> I don't know, but doesn't the page indicate a way to get taken off the >>> blacklist? Either way you should complain to your hosting provider. >>> You are sharing a server and someone is using it to send spam, >>> although that might be long ago. >>> >>> This is what I see when I check the email you forwarded to me... >>> >>> Problem Entries, (listings will cause email problems.) >>> 85 "Spam" entries [02:08:44 20 Apr 2017 GMT+00]. >>> 1 "Virus" entries [20:38:42 21 Nov 2016 GMT+00]. >>> >>> http://www.sorbs.net/lookup.shtml? 64.8.71.112 >>> >> >> That is not my IP, that is the example they use on their site. > > Is it not *your* IP address, it is the IP address of your *email > server*. Here is what shows up in the emails you sent me. > > Received: from smtp.knology.net (smtp.knology.net. [64.8.71.112]) > > >>> You ask for your IP to be delisted, but if the spam continues it will >>> be put back on. >>> >>> Clearly there is an ongoing problem with your shared server hosting. >> >> You're using info from the wrong IP. >> >>> Open a ticket with your hosting support and send them the bounce >>> messages. > > You can look into this or not. Read the bounce message and use the > delist button on the web page after you create an account. Then contact > your hosting provider. > >OK, I contacted my provider, I'm waiting for a return call, don't worry it's not like it's a 4 hr window. It's up to 48 hours. Mikek --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
Reply by ●April 26, 20172017-04-26
rickman wrote:> On 4/23/2017 3:03 AM, Robert Baer wrote: >> rickman wrote: >>> On 4/22/2017 2:59 AM, Robert Baer wrote: >>>> amdx wrote: >>>>> On 4/21/2017 3:33 AM, Robert Baer wrote: >>>>>> Can't get/see that schematic; in any case, for low(er) level >>>>>> sensitivity and "linearity", try adding a small forward DC bias to >>>>>> move the average OP up the curve. >>>>>> >>>>> >>>>> Still works for me. >>>>> https://www.dropbox.com/s/3oyjn2teglg47b7 >>>> * Nope; get: >>>> "Download and save to your Dropbox by creating a free account, or sign >>>> in" >>>> I do not have a dropbox... >>> >>> You don't need a dropbox. Click the X in the upper right corner. >> * Neat,,,just as expected it closes the site. Very useful. > > Not sure what you did. I can make the signup overlay go away and then I > see the full page. > > >>>>>> https://www.dropbox.com/s/3oyjn2teglg47b7/Diode%20detector%201N34A%20500ohm%20adjusted%20R1%20and%20R2.jpg?dl=0 >>>>>> >>>>>> >>>>>> >>>>>> >>>> * No schematic.. >>> >>> Because you didn't look... >> * But i did, tried a number of things, nogo. >> However, once in a while it works. > > What did you do differently to make it work? >Nothing different.
