Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
I think this will do what you want.
At power on:
1. Light speed on and remains on.
2. Rediculus speed on 2s later and remains on.
3. Ludicrus speed on 2s after Rediculus speed, flashes 6 times, then resets the circuit.
4. Cycle repeats.
I've used 74HC273 instead of CD4017 because I could make...
I did...
"if you want to know LED Vf/If detail and binning info, you'll need to find out the part number of the internal LED's, then search for a data sheet"
These AC lamps are "binned" by color temperature.
If you want to know LED Vf/If detail and binning info, you'll need to find out the part number of the internal LED's, then search for a data sheet.
A good ground plane will fill all areas of the board including between pads and traces.
There are a lot of areas on the board that did not get filled by the plane. The most likely reason is that the clearances and/or the pads/traces are too big. Keep in mind that pad/traces sizes and clearances...
You could make GND a ground pour on the bottom side.
Assuming you left space on the right side of mosfet Q4 to optionally mount it flat on the PCB, you might want to double check the orientation of its pins. A copper pour, with a mounting hole for the mosfet, and sized to accommodate the mosfet...
I see two things....
The Zener is practically floating.
The divider is putting ~60 volts on the gate. The max gate voltage is +/-20V.:oops:
So I think the mosfet has been killed..;).
EDIT:
Download the library from Infineon.
Use the model value IPD40DP06NM_L0 when using a standard 3 terminal...
R1 is 9k, try changing C to 2.2uf so timeout is ~22ms
VCC should be 12v.
If that doesn't work, you might have to drive an analog switch, or a small relay, with the 555 timer.
Hi TC
I've gone back and rechecked this circuit and it turns out I had a bad CD4025B chip. I must have zapped it. Anyway, the circuit works as intended. I did make some minor mods though.
I removed D10 and R4, not needed. Changed Rx1/Rx2 to 150k each to match the flash period of 705m Hz.
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.
