How does the Christmas light function with y803a cob how to replace that cob with other ic


Mod edit: Direct-to-mains power supplies are not allowed on AAC for safety reasons. JohnInTX

 

Welcome to AAC.

In order to get help you are going to have to provide more information.

What do you want to change about the lights, that is, what do you want the “new IC” to do?

We need photos of the board from the top and the bottom to see what the circuit looks like.

How are the LEDs wired in the string?

 

Welcome to AAC.

In order to get help you are going to have to provide more information.

What do you want to change about the lights, that is, what do you want the “new IC” to do?

We need photos of the board from the top and the bottom to see what the circuit looks like.

How are the LEDs wired in the string?

Mod edit: Direct-to-mains power supplies are not allowed on AAC for safety reasons. JohnInTX

 

I want to build circuit as the same above but replace the y803a

 

Leds are connected in series

 

This LED flashing circuit blinks and glow in the following series.

• Combination
• In Waves
• Sequential
• Slo-Glo
• Chasing/Flash
• Slow/Fade
• Twinkle/Flash
• Steady On.

Components Required for Christmas LED String Circuit

• SCR 1 and SCR 2 = PCR 406 PNPN
• D1 = IN 4007
• C = 10μF, 16 V
• R1 = 2MΩ
• R2 = 150kΩ
• LED = 60 Nos
• IC/Chip (Programmable) = Y803A
• Tactile Switch = Pattern Change
• Input Voltage
• 220V, 50-60 Hz

 

Welcome to AAC.

In order to get help you are going to have to provide more information.

What do you want to change about the lights, that is, what do you want the “new IC” to do?

We need photos of the board from the top and the bottom to see what the circuit looks like.

How are the LEDs wired in the string?

This LED flashing circuit blinks and glow in the following series.

• Combination
• In Waves
• Sequential
• Slo-Glo
• Chasing/Flash
• Slow/Fade
• Twinkle/Flash
• Steady On.

Components Required for Christmas LED String Circuit

• SCR 1 and SCR 2 = PCR 406 PNPN
• D1 = IN 4007
• C = 10μF, 16 V
• R1 = 2MΩ
• R2 = 150kΩ
• LED = 60 Nos
• IC/Chip (Programmable) = Y803A
• Tactile Switch = Pattern Change
• Input Voltage
• 220V, 50-60 Hz

Mod edit: Direct-to-mains power supplies are not allowed on AAC for safety reasons. JohnInTX

 

Well, your problem is that the Y803A COB has those functions built in. To replicate those patterns you will need to program an MCU (microcontroller) to duplicate them. It's not that hard, but you will need to work out a fair bit of code with so many patterns.

There will be no direct replacement for the COB, it's a very specialized chip and that circuit is an application of it. You could build a very similar circuit, if not identical, but you still need that MCU. I think an ATTINY85 would be good enough.

 

But this circuit has to work in 230v

I have to design adapter and controller section separately

 

Well, your problem is that the Y803A COB has those functions built in. To replicate those patterns you will need to program an MCU (microcontroller) to duplicate them. It's not that hard, but you will need to work out a fair bit of code with so many patterns.

There will be no direct replacement for the COB, it's a very specialized chip and that circuit is an application of it. You could build a very similar circuit, if not identical, but you still need that MCU. I think an ATTINY85 would be good enough.

Thanks for the info

Should I be able to control voltage using resistance for this ic

 

Mod edit: Direct-to-mains power supplies are not allowed on AAC for safety reasons per the Terms of Service and User's Agreement. Images deleted.
This thread may continue if safe power supplies are used.

 

Mod edit: Direct-to-mains power supplies are not allowed on AAC for safety reasons per the Terms of Service and User's Agreement. Images deleted.
This thread may continue if safe power supplies are used.

Ok I will the rules

 

Does any one know about ELM711DS ic

 

Here is the datasheet

By the way, the circuit that was posted here is dangerous in many respects, the capacitor in series with the AC line should have a bleeder resistor across it (470k for about a 1 second time constant) to reduce chance of electrical shock and a fusible resistor (100 to 200 ohms) in series with the AC line to protect the circuit from damage when AC if first applied and to protect against overload.

You would do well to isolate the circuit from the power line with a 1:1 transformer.

 

Hiii everyone
Can y803a microcontroller be run from DC? What is its pinout?

 

Look at the last page of the datasheet carefully. I can operate from DC.

The
PIC12(L)F1822/PIC16(L)F1823 Data Sheet
, file
name 400041413E.pdf (4.2 MB). At the Microchip
home page, use the Search Data Sheets box to look
for 12F1822