auto radio solid state vibrator for vintage tube radio

[PM3295]

If you want you can do it. I think a lot of people will prefer the simple design, to be honest. Something they can also quickly knock up on strip-board if they don't want to get a pcb. It will be more doable with standard TH parts. We will need a small 12V regulator (78L12) to supply the two chips if it is going to be used over 12 V. We don't need the zener then.

[sphinx]

ok i will use a 78L12 , was just starting with schematics and thought i'd make it smd going to change it to TH then. might be better when fiddling at home

i agree with you, if a simpler solution works good i would use it preferably.

[PM3295]

Maybe make it a 78L09, then it will still regulate with 12 V systems, as it requires 10.7 V input to maintain regulation. With the jumper you can select if you want the low 6 V operation.

[sphinx]

there are LDO types a 10v might work i will add a note about it

[PM3295]

I like the 78 series because they are really easy and cheap to get hold of. Nothing special. Old school. 

[PM3295]

I had to change the 4093 to 4011 since my breadboard test gave very limited adjustment due to the 4093's hysteresis band. I did not work as well like in Proteus.

[sphinx]

this is a simpler version 12v only with thru-hole components for making simply at home with a alsmost single layer boards

where there is only one trace that is on the top layer this trace is made si it can easliy be made with a wire

if there is no errors found this would be a final edit

have fun with it

if you want some extra info on the schematic sheet let me know.

have fun with it

[PM3295]

Don't you think having a jumper when 6 V operation is wanted will be a good option? Like I have it in my diagram.

[sphinx]

and i thought that was for sonething else, i will fix that, now i get it it was both 6v and 12v operation i thought it was 12v only thats why.

UPDATED !! with a jumper for 6v and 12v operation

Posted on: 2023-02-18, 07:07:23 - Automerged
i found an error in schematic now fixed

it will complain over missing gerber x2 files you disregardds this and delete those in "Generated Gergber X2"

i know this is a low voltage circuit, one can alllways make bigger spacing on IC1 voltage regulator. it coule make it easier to solder as well

do as you wish with it

[PM3295]

Here is an interesting book (+100 pages pdf) on the theory and design of vibrator-type-power supplies. Lots of info on the transformer design, etc. Link in txt doc.

[sphinx]

a simple vibrator may look simple but it is a lot of things to think of when making it and adjusting it, i starting to read document
and many interesting things one might not really think about

i recommend others to read it as well its a good book and i am even starting to read it