The input impedance of the detector is around 300kO, which doesn’t appreciably load the source. The diode is operated with a slight forward bias so a regular silicon signal diode (e.g., 1N914) can be ...

The proposed circuit is simple because the LM3915 IC does pretty much all the work ... So, a common silicon diode rectifier will not work well at the low end due to the 600mV diode threshold. The half ...

When [b.kainka] set out to make the world’s simplest RF detector, he probably didn’t realize it would be as easy as it was. Consisting of only a handful of components and thirty eight l… ...

A simple Zener-diode stabilization network circuit using D2 supplies a voltage of 100 V dc. The value of R1 depends on the source voltage and must be calculated with the equation, R1 = (V ac −s ...