Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Thanks for responding so quickly audio guru. The drawings I put up at first so I removed some. I'm not using those.I haven't implemented an H bridge yet I am still working on forward. It seems that the on pulse never goes away completely, because whether I try to control it by varying the...
Hello again,
I have built PWM circuit out of two 555's and a third that generates a 10KHz tone which is modulated by the PWM. THis is going to be transmitted to an RF receiver at 27MHz.
On the receiver there is a tone detector which extracts the PWM to be applied to an electronic speed...
I was trying to use a 13.8Vdc to 110VAC power inverter (350 watts) to power a model railroad layout. THe resistance of the tracks was if I recall correctly, when one engine was on, about 12 ohms. There were two turnoffs and a blinking (led) water tower that ran on about 18Vrms. At 17 or 18...
Frank,
I can't find the website again where I got the scematic. It is supposed to work I suppose as a zero IF receiver, or direct conversion, I'm not sure, THe crystals are same. I have tried many receiver circuits. Can you recommend a good one?
George
Hello,
I have been trying to develop a control system for an RC vehicle. using a different kind of approach. I haave been informed thst it is not very practical one, but I'm trying it anyway just to satidfy my curiosity. The schematics of the tranmitter and receiveer as well as amps developed...
I have a receiver for an RC car that has a 6V max voltage and the motor has a 9V max voltage. BY that I mean, the max supply voltage you can apply to the receiver is 6VDC, while the motor takes a 9V max input drive voltage. I don't get enough torque out of the motor with a 6V drive input so I...
I was wondering if the DC motor controller that I installed in n the rc car that I am putting together puts the full battery voltage across the motor in forward and also rverse, or if it is 1/2 the voltage for forward and the other half for reverse. Unfortunaately I cannot access the unit or...
Yes , if I was to continue with this project I would change the frequencies, but I couldn't get it to respond to a single tone. I don't have a scope anymore. What range of amplitudes does it work? I didn't see it in the data sheet.
I didn't know that. In that case the whole idea was incorrect right from the start. I definitely won't pursue it any more. How did they employ the tone decoders in those days?
George
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
