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Measuring Solar Radiation based on Photovoltaic Cells
#68

Hi,

(18-07-2015, 03:46)seth22 Wrote:  rated at 1v 100mA under full sunlight

Unless you put a resistor of about 1 or 2 ohms across the panel (which may produce values up to perhaps 100 or 200) then the results are MEANINGLESS. You must measure the "short-circuit" current from the panel, not an "off load" value. Then you need to calibrate the value against a known light level such as "clear sky sun" at your location.

The circuit doesn't need a particularly "good" Op-Amp, so you should be able to obtain a quantity at a cost of much less than $8 each. You just need to look for a "rail to rail" type (i.e. one that works correctly when the inputs and outputs are at ground potential).

Cheers, Alan.
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Messages In This Thread
Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:37
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:38
RE: Measuring Solar Radiation based on Photovoltaic Cells - by fehmi - 04-02-2016, 21:21
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 05-02-2016, 02:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:40
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:41
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 07-09-2014, 11:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 08-09-2014, 20:30
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 09-09-2014, 11:24
RE: Measuring Solar Radiation based on Photovoltaic Cells - by water01 - 09-09-2014, 00:13
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 09-09-2014, 03:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 09-09-2014, 15:13
RE: Measuring Solar Radiation based on Photovoltaic Cells - by water01 - 09-09-2014, 20:17
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 09-09-2014, 22:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by water01 - 09-09-2014, 23:15
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 10-09-2014, 00:45
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 12-01-2015, 13:50
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 14-01-2015, 20:15
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Brett - 13-01-2015, 12:09
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 13-01-2015, 12:42
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Brett - 24-01-2015, 23:09
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 24-01-2015, 23:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Brett - 25-01-2015, 08:51
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 25-01-2015, 19:42
RE: Measuring Solar Radiation based on Photovoltaic Cells - by tyntop - 02-02-2015, 23:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-02-2015, 03:27
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 01-04-2015, 17:06
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-04-2015, 03:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by strkomis - 29-05-2015, 08:20
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 29-05-2015, 10:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 29-05-2015, 18:40
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 02-06-2015, 11:22
ideas to improve the measuring of solar radiation - by hvalentim - 03-06-2015, 11:01
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-06-2015, 11:50
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 03-06-2015, 13:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-06-2015, 17:33
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 05-06-2015, 15:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 11-06-2015, 04:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 11-06-2015, 18:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by tyntop - 11-06-2015, 19:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 11-06-2015, 19:47
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 11-06-2015, 20:17
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 12-06-2015, 00:44
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 12-06-2015, 06:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 12-06-2015, 13:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 12-06-2015, 17:43
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 13-06-2015, 00:16
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 16-06-2015, 11:08
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 13-06-2015, 01:02
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 13-06-2015, 00:49
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 13-06-2015, 00:56
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 13-06-2015, 11:11
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 14-06-2015, 02:41
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 16-06-2015, 23:53
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 13-06-2015, 14:19
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 16-06-2015, 15:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hvalentim - 16-06-2015, 16:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 16-06-2015, 17:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 17-06-2015, 02:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 30-06-2015, 18:16
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 30-06-2015, 21:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 12-07-2015, 11:30
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 12-07-2015, 15:19
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 12-07-2015, 16:43
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 12-07-2015, 23:31
RE: Measuring Solar Radiation based on Photovoltaic Cells - by zitoune - 18-07-2015, 02:40
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 16-07-2015, 14:19
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 18-07-2015, 03:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-07-2015, 15:32
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-08-2015, 02:47
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 18-07-2015, 15:40
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-07-2015, 15:59
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 19-07-2015, 10:26
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 19-07-2015, 17:57
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 20-07-2015, 10:49
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 20-07-2015, 11:07
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 20-07-2015, 11:17
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 21-07-2015, 16:25
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 24-07-2015, 02:38
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 25-07-2015, 15:44
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 02-08-2015, 14:27
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 02-08-2015, 15:42
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 02-08-2015, 17:30
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 03-08-2015, 17:22
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 03-08-2015, 04:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-08-2015, 22:53
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 03-08-2015, 12:38
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 03-08-2015, 13:47
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 08-08-2015, 07:39
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 08-08-2015, 15:21
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 09-08-2015, 14:48
RE: Measuring Solar Radiation based on Photovoltaic Cells - by strada916 - 12-08-2015, 14:23
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 12-08-2015, 14:45
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 12-08-2015, 16:20
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 12-08-2015, 19:07
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 13-08-2015, 09:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 13-08-2015, 15:48
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 19-08-2015, 00:53
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 19-08-2015, 16:51
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 29-08-2015, 04:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by seth22 - 05-09-2015, 09:12
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 06-09-2015, 16:48
RE: Measuring Solar Radiation based on Photovoltaic Cells - by laulau - 22-01-2016, 14:11
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 23-01-2016, 13:51
RE: Measuring Solar Radiation based on Photovoltaic Cells - by laulau - 23-01-2016, 17:39
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllanG - 23-01-2016, 17:56
RE: Measuring Solar Radiation based on Photovoltaic Cells - by laulau - 24-01-2016, 10:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 24-01-2016, 11:05
RE: Measuring Solar Radiation based on Photovoltaic Cells - by laulau - 30-01-2016, 11:13
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 30-01-2016, 21:39
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 12-02-2016, 00:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 13-02-2016, 21:10
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 13-02-2016, 22:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 14-02-2016, 00:07
RE: Measuring Solar Radiation based on Photovoltaic Cells - by JT118 - 14-02-2016, 16:25
RE: Measuring Solar Radiation based on Photovoltaic Cells - by meteobreda - 04-04-2016, 16:20
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 07-04-2016, 11:21
RE: Measuring Solar Radiation based on Photovoltaic Cells - by meteobreda - 07-04-2016, 21:15
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 07-04-2016, 22:06
RE: Measuring Solar Radiation based on Photovoltaic Cells - by zitoune - 17-08-2016, 16:36
RE: Measuring Solar Radiation based on Photovoltaic Cells - by zitoune - 18-08-2016, 09:58
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-08-2016, 10:52
RE: Measuring Solar Radiation based on Photovoltaic Cells - by zitoune - 18-08-2016, 11:12
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-08-2016, 23:29
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 26-06-2017, 20:58
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 00:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 27-08-2017, 09:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 27-08-2017, 11:01
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 27-08-2017, 20:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 27-08-2017, 00:48
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 02:36
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 27-08-2017, 20:04
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 23:09
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 23:16
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 27-08-2017, 23:28
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 28-08-2017, 00:59
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 28-08-2017, 14:33
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 28-08-2017, 17:25
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 30-08-2017, 02:02
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 31-08-2017, 11:00
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 31-08-2017, 04:36
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 31-08-2017, 15:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 31-08-2017, 22:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 01-09-2017, 00:07
RE: Measuring Solar Radiation based on Photovoltaic Cells - by jgveill - 01-12-2017, 20:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by f4aii - 01-12-2017, 07:13
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 01-12-2017, 11:03
RE: Measuring Solar Radiation based on Photovoltaic Cells - by f4aii - 01-12-2017, 13:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 01-12-2017, 21:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 19-07-2019, 14:34
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hornychz - 19-07-2019, 16:11
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 19-07-2019, 16:38
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hornychz - 19-07-2019, 22:36
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 22-07-2019, 12:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 26-07-2019, 10:16
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hornychz - 27-07-2019, 15:01
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 29-07-2019, 11:29
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 26-07-2019, 13:43
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Aggotrom - 26-07-2019, 16:01
RE: Measuring Solar Radiation based on Photovoltaic Cells - by HF_ATL - 18-08-2019, 21:37
RE: Measuring Solar Radiation based on Photovoltaic Cells - by AllyCat - 18-08-2019, 22:56
RE: Measuring Solar Radiation based on Photovoltaic Cells - by uncle_bob - 20-08-2019, 01:14
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 18-08-2019, 22:25
RE: Measuring Solar Radiation based on Photovoltaic Cells - by SSHEEHY - 07-03-2021, 20:27
RE: Measuring Solar Radiation based on Photovoltaic Cells - by hornychz - 08-03-2021, 00:46
RE: Measuring Solar Radiation based on Photovoltaic Cells - by HF_ATL - 18-08-2019, 23:37
RE: Measuring Solar Radiation based on Photovoltaic Cells - by HF_ATL - 20-08-2019, 08:57
RE: Measuring Solar Radiation based on Photovoltaic Cells - by Werk_AG - 08-03-2021, 05:46



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