Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread MrThe50sanchez .
neonixie-l@googlegroups.com; newxito > Subject: Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY > > On 2020-05-14 11:35 AM, newxito wrote: > > There is a schematic of a high voltage supply (350V, 1.2mA) in the > > LT1308 datasheet, so maybe you can modify the circuit

Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread MrThe50sanchez .
Hello! Wow, I was looking a lot to the datasheet but just the first schematic It appeared, Just going to study the one you just said, It looks really good. [image: high voltage.PNG] Thanks a lot, best regards from Spain. El jue., 14 may. 2020 a las 17:35, newxito () escribió: > There is a sc

Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread MrThe50sanchez .
Hello! So sorry that I putted in the wiring diagram the capacitors without the positive and negative pins. As I searched, yes, they need to be with polarity for the cicles high up the voltage in every step. About the transformer, The LT1308B does have the pin SW so when it is on, It give`s the sw

Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread MrThe50sanchez .
Hello! thanks for the answer. Wow, I thought that the most important think was the Vin voltage so the turn ratio of the transformer can high up with the kick. So, is there anywhere that I can see with how much current goes to the Vin , how much voltage do Im going to get at the seecundary? thanks

Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread newxito
You can find the schematic in the LT1308A/LT1308B datasheet. Am Donnerstag, 14. Mai 2020 18:33:44 UTC+2 schrieb Toby Thain: > > On 2020-05-14 11:35 AM, newxito wrote: > > There is a schematic of a high voltage supply (350V, 1.2mA) in the > > LT1308 datasheet, so maybe you can modify the circuit

RE: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread Bill van Dijk
[mailto:neonixie-l@googlegroups.com] On Behalf Of Toby Thain Sent: Thursday, May 14, 2020 12:34 PM To: neonixie-l@googlegroups.com; newxito Subject: Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY On 2020-05-14 11:35 AM, newxito wrote: > There is a schematic of a high voltage supply (350V, 1.

Re: [neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread Toby Thain
On 2020-05-14 11:35 AM, newxito wrote: > There is a schematic of a high voltage supply (350V, 1.2mA) in the > LT1308 datasheet, so maybe you can modify the circuit (FB voltage The problem with a lot of datasheet designs is that the transformers are long unobtainable. (Also I don't see that circuit

[neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread newxito
There is a schematic of a high voltage supply (350V, 1.2mA) in the LT1308 datasheet, so maybe you can modify the circuit (FB voltage divider resistors ) to get 170V at 2.5mA, that should be enough current for one 1N16. If you need more current, have a look at the LT3757 in flyback mode. -- You

[neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread gregebert
The voltage tripler as shown requires symmetric positive and negative cycles. The flyback topology you are using is primarily unipolar, so it wont produce the symmetric positive and negative cycles like a line-powered transformer does. If you are going to use a flyback topology with a voltage m

[neonixie-l] Re: HELP WITH HIGH POWER SUPPLY

2020-05-14 Thread Paul Andrews
This design works by inducing a voltage in the primary when the current flowing through it is turned off. The voltage induced doesn't have much to do with Vin, It has more to do with how long the current is allowed to flow. On Thursday, May 14, 2020 at 5:50:57 AM UTC-4, MrThe50sanchez wrote: > >