LM datasheet LM component LM integrated circuit LM schematic LM application note M LM LM18 LM1. LM Specifications. alldatasheet, free, Datasheets, databook. LM data sheet, Manual, LM parts, chips, ic, Electronic Components. application. I wanted to build RF Transmitter and receiver using LM,72 ICs.i have read all the data from the datasheet but i am unbale to understand.

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Remember Me Forgot Password? Looking for 3 channel circuit dtaasheet. May 04, I’ve been searching for many hours and have yet to come upon any feasible circuits. The only criteria of the build are that it should preferably have 3 channels and that it must be able to control the rotation of two servos and the speed of the main motor.

LM datasheet & applicatoin notes – Datasheet Archive

If anyone could point me to any electronic schematics or any useful information in general, I would be extremely appreciative. I’m assuming this forum is the right place to ask datashheet kinds of questions, but if it isn’t I apologize.

Any micro-controller having 3 analog inputs and 3 digital outputs can do the job. The Arduino boards can also do that. So, there is not real schematics, but only programming examples.


What do you use as HF transmission? Welcome to the forum. It works in conjunction with a companion transmitter chip, LM, to provide four channels of control. These devices are well suited for use at 27, 49 or 72 mhz. Files View all Files in thread. Last edited by whitecrest; May 04, at Thank you for your quick replies! Yeah, forgot to state that I’m looking to be using 27mhz for the build.

Even though it makes my job much easier, I would also prefer to be making the whole circuit without using an IC that does everything for me: P Having clocks in the circuit would be fine though. Last edited by Magranon; May 04, at The chip does a lot, but you still need to provide support circuitry to complete a project.

Even using the IC, it should provide plenty to do. If you must use dataasheet components, look up some old Heathkit radio control circuits.

LM1871 RC Encoder/Transmitter

Some of those may have operated at 27mhz. I found a few circuits, but I am a bit unsure about the usage of these ICs. Here is the companion data sheet for the LM transmitter chip. Theory of operation and suggested circuits are provided in both data sheets.

Pin 6 appears to be used to determine the number of transmitted channels in a prospective system. Originally Posted by Magranon.


LM1871N – LM1871 RC Encoder/Transmitter

May dayasheet, Thanks for informing me about the IC, I’ll definitely be using it for my project. However for this receiver attached belowI have no idea what the values of B1, B2 or B3 are, nor is it mentioned anywhere on the website the image came from.

Does it even matter what value they are? Sorry if this is a newbie question, which it probably is. Images View all Images in thread.

I have no idea what the values of B1, B2 or B3 are, nor is it mentioned anywhere on the website the image came from. Something like thisand shop?

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Posting Quick Reply – Please Wait. Looking for 3 channel circuit diagram Hey everyone, I’m looking to build a simple RX and TX with encoder and decoder from scratch for an upcoming RC plane project. Sign up now to remove ads between posts.

Bruce Abbott We want Images View all Images in thread Views: Originally Posted by Magranon I have no idea what the values of B1, B2 or B3 are, nor is it mentioned anywhere on the website the image came from.