Hi
I am new to electronics. Could any one please identify the IC2 in the attached file.

ManyThanks in advance
Roger

 

Welcome to AAC!
IC2 could be one of any number of ICs, depending on the intended operation of the circuit.
If IC1 is meant to be a 555 then its wiring makes no sense.

 

I agree with Alec. Also, if we knew what the circuit was intended to do, that may also help us a little bit. But I also agree, if IC1 is a 555, it's wiring appears to be incorrect. From where did you get this diagram?

 

What's does the circuit used for?

 

Welcome to AAC!

Hi
I am new to electronics. Could any one please identify the IC2 in the attached file.

You've found an example of how not to draw a schematic.

When IC packages are used, IC pin order is maintained, pin space is uniform, and all pins are shown. It's use obscures circuit functionality.

 

8 Pins IC -- The Vcc and Gnd matched with NE555, but it is not NE555, not LM358, not uA741.
14 Pins IC -- The Vcc and Gnd matched with LM324, but the Pins of function don't match, it also does not LM339.

 

Attached is a circuit for controlling the output to a sequence of LEDs. It varies flashing, timing etc.,

 

Ic1 has the pinout of an I2C memory The pullups on the SDA and SCL seem to be in the right place.. However!! never seen all this running from 0.6v before... Its the only fly in the ointment!!

 

Attached is a circuit for controlling the output to a sequence of LEDs. It varies flashing, timing etc.,

No it's not. Where is it? Can you try again?

 

I think this guy is just pulling our chains.

 

D1 is useless , and Ic2 doesn't have a positive supply .

 

Shred the drawing. Describe what you want.

 

@Dodgydave: If

necessity is the mother of invention

then

mother-in-law is the necessity FOR invention.

Or intervention. I can never keep those straight.

 

I would need a circuit that controls the sequence of LEDs. Like flashing and timing.

 

Search for "LED chaser schematic" or "LED sequencer schematic". There are gazillions of circuits out there.

 

IC1 is probably one of the 8 pin serial eeprom 24Cxx chip,
so IC2 can only be a MCU where the Vcc and Vss are P4 and P11.

Make sense?

Allen

 

IC1 is probably one of the 8 pin serial eeprom 24Cxx chip,
so IC2 can only be a MCU where the Vcc and Vss are P4 and P11.

Make sense?

Allen

The 8 Pins IC can be matched with 24C16 or 24LC16 etc, but the 14 Pins IC still doesn't get it yet.

 

IC1 is probably one of the 8 pin serial eeprom 24Cxx chip

Going by the thread title I doubt it.

 

Does the original circuit looks like this?



EM78P153S -- 8-Bit Microcontroller with OTP ROM.

 

Makes sense. Amazing detective work.

Bob