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.
I am using one way communication for sending data to display from microcontroller. In this case as the output of 75176 is always enabled, are the bias resistors necessary?
Secondly, the cable length will no exceed more than 5mtrs, so are the termination resistors necessary?
Let me explain my...
Thanks Audioguru, I don't have an issue about the long interval, the only thing I need is that the capacitor should store enough energy to make sound for at lease 2/3 seconds.
Regarding the capacitor voltage I will use 1381U which is mentioned in the solar engine. It will apply the capacitor...
I will use 2 solar cells in series to get 1V. Secondly I will use a large capacitor such as 2200u/6.3V to store more energy.
It will be okay even if it takes several minutes.
I will try using a **broken link removed** like arrangement after the diode & capacitor.
I am trying to use 0.5V/80mA **broken link removed** to charge a capacitor at higher voltage & then use all of the capacitor's energy emit **broken link removed**.
I do not want to power the load continuously. It may be such that as soon as the capacitor voltage rises to say 5V, the capacitors'...
@ALERTLINKS, this is regarding your suggestion
**broken link removed**
The only missing feature that I need is to control the load as per the ambient light conditions. For that I am planning to use the fourth comparator.I will connect its +ve input to the reference voltage (2.5V) & -ve to a...
Thank you ALERTLINKS, you have helped me a lot in this matter. I will check the circuit. I will also try using comparator chip so as to reduce the transistors.
Thanks, the circuit looks really good, I will try it. I can also use it in the previous circuit (using TL431). BTW that circuit is working fine now. The battery was faulty so no charging current & the solar panel voltage @16V appeared on battery terminals.
One more help please. I observed that...
Thanks, ALERTLINKS. Really that circuit does not seems okay.
I got an another circuit, I am planning to use this circuit. This is microcontroller based charge controller. AND USES N-CHANNEL MOSFET. Using n-channel was my primary intention. They are cheaper & have low RdsON. (IRFZ44-0.024ohms...
Yes, you are absolutely correct. I also had the same thought because even the battery voltage was raised to 16V there was still no charging current. I will post the results with a good battery along with your suggested modifications (22uF capacitor across variable resistor).
Can you please...
Thanks I will go through the links. After ALERTLINKS' modifications the circuit worked okay with 470K & 100uf capacitor. The LED starts blinking slowly after proper adjustment without load.
But when I connected a battery (discharged to 10.5V) it was still blinking. That means trickle charging...
As I am facing some problems I am not going to use this circuit. The transistor only fires if the resistor is reduced to 470K. But then the LED blinks fast. Similarly if the battery is disconnected while charging and again connected the charging stops. It will only start again when we disconnect...
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.
