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I have an RSSI output from my receiver. I would like to wake up the rest of the circuit when the RSSI output voltage goes above 0.6V. This voltage is uaually 0.4V and can go upto 1.5V. The system is running on a 3V supply. So I want to convert the voltage as follows
1v to 5v step up
I have setup a board with a similar device to that of MAX1674 from Linear Tech
Problem is that they require quite a large and variable input current which my tiny solar cell cannot provide and thus the device fails to start up.
for Prototyp_V1.0: can I use a 32khz squarewave...
Re: Capacitor Selection
Originally Tantalums were used as they were the smallest size. HOwever, ceramics are much better and now that they are smaller they should be used instead if possible plus they are cheaper (i think)
Re: Capacitor Selection
I do not see any reason why you cant use these. If you are trying to achieve very low noise system, especially near ADC you can use multiple decoupling capacitors, my chain is usually 10uF, 100nF and 100pF to achieve low noise.
dc voltage 1v to 5v
These have been discussed here before but my application is a bit different.
I want to generage 5V from 1V. However my source is a solarcell and th output is a few milliamps, usually between 1 and 5mA. I want to use this to top-up a rechargable battery, however due to...
Re: Radome Measurement
place the antenna on a VNA and compare with or without radome. If the filter frequecy of antenna moves after placing the radome, you may be able to enlarge,redce the size of the antenna to compensate for the loss and bring antenna backinto frequency with the...
scheme transmitter 49mhz
thanks radio head. can you explain to me the two inputs B3 and B2 pins on the micro. As far as i can understand, PCM PWM both require only one digital input (i.e the data stream). so what is the other input for?
circuit diagram of rc helicopter
I am trying to make my own transmitter that should work with 40MHZ OOK reciever for RC helicopter. I have found this circuit from net.
but i dont understand this well or how to conver it to 40mhz.
i am designing a micro controller circuit that is powered by usb. but some of the functionality need +5 to -5 volt range while usb provides only +5 volt, is there an easy way to convert the +5 to -5 volts as well?