On Thu, Feb 27, 2025 at 11:50 PM, Fred M wrote:
Sure, there are several measurements available in the web:
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The use of an 1N4007 as P.I.N. diode for Shortwave frequencies is well documented. See Jims link:
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I have a problem reconciling the measurements of Cedola et al and IN3OTD.
I plotted IN3OTD's Fig. 1 data on a graph comparing 3 different types of real PIN diodes (below). ?IN3OTD's data are the red triangles in the graph. IN3OTD's data lies somewhere between the Tau = 0.5 uS diode (blue trace) and the 0.2 uS diode (red trace).
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/g/loopantennas/photo/300438/3895061
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In contrast to the above, Cedola et al reported Tau = ~ 7 uS - clearly a very thick bulk diode. This discrepancy has implication on what is the suitable application for 1N4007: attenuator, switch or limiter?
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73, Leong, 9M2LCL, ex-9W2LC
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