The 555 timer to use in unexpected scenarios
The 555 timer has found many applications throughout the years. However, there’s one project that came up with something truly unique as well as different in all the right ways. A pair of 555s was put on a stripboard that uses a bunch of LC circuits instead of the standard passives. In this particular scenario, the 555 is no longer a timer. It is a Morse transmitter designed to be used with the 80 meter amateur radio band.
The 555 in this case was set up as a feedback oscillator. It was achieved via a toroidal transformer featuring a tuned circuit that was bound to set the oscillation frequency. The inverted input coming out of the oscillator was used to generate additional push-pull outputs coming from the 555s. These are subsequently fed to yet another transformer. This one, in turn, is feeding the antenna through the low-pass filter.
For the HF bands, these squarewave oscillators are a standard thing but in this case, the 555 design is really first of tis kind. Despite the fact that it isn’t producing too much RF power, yet one must keep in mind the 556 dual timer that got the job done right, so picking the more potent 555 options could provide you with some actual power in the first place. Such a creative approach is nothing but commendable and we definitely hope that the enthusiast who was working on the project, will provide us with that sought-after entry, proving that such a thing is more than a mere possibility.
If you are looking for more info on the low-power radio operation, we can tell you that this matter is somewhat studied already and there are ways to put it to some use already. If that is the case and you are therefore already looking for the right ways to go, this right here is the perfect resource that will aid you in finding out more as well as within the very least amount of time feasible. The thing is – if you are searching for the best ways to make the most from your needs, this right here is the perfect choice that will enable you to get all the right info asap.
The amateur radio news resource is always there to provide you with all the up to date info in a single place.