August 27, 2018, 7:29 pm
I recently bought a few Peregrine Semiconductor‘s PE42420 RF Switch evaluation boards on eBay. The PE42420 is an absorptive SPDT RF switch that operates between 100 MHz and 6 GHz. Besides the obvious use as a single pole double throw RF switch, we will take a look at using it as an RF modulator due to its fast switching time (~300 ns) in this post. A video of the experiments discussed in this post can be found towards the end. Continue reading ‘OOK/FSK Modulation Using PE42420 RF Switch’ »
Tags:
ASK,
FSK,
HP8566B,
HP8642B,
HP8671A,
OOK,
PE42420,
Peregrine Semiconductor,
RF Switch,
SPDT,
Wavetek 1045,
Wavetek 395 Category:
Electronics |
Comment
December 12, 2014, 11:58 am
Latching relay (a.k.a. impulse relay) can be turned on and off by momentarily applying a voltage across the relay coil. The relay would maintain in its last switched state without the need to maintain the coil current. In this post, I will show a simple circuit which can be used to drive such relays. In the video towards the end, I also included more explanations and some demonstrations. Continue reading ‘How to Drive a Latching Relay’ »