Good evening Orelli
Thank you very much, for tension of 120v in 200v, and of 200v in 300v, which are the last plans
Thank you
Thank you very much, for tension of 120v in 200v, and of 200v in 300v, which are the last plans
Thank you
I assume you are in the wrong thread?
Have a look in the "Simplistic HV shunt regulator" thread...
Vaio laptop reg
I want to make a low reg for Vaio laptop Vout 19,5VDC & 4,7A, can I use V1.2R schematic or I need to change something?
I want to make a low reg for Vaio laptop Vout 19,5VDC & 4,7A, can I use V1.2R schematic or I need to change something?
Not a good idea.
A CCS+Shunt regulator needs the CCS set to maximum demand plus a bit to spare.
If you supply <=4.7Adc @ 19.5Vdc from ~26Vdc, then the regulator will have to be capable of dissipating ~122W continuously and even more when the mains supply is high.
A CCS+Shunt regulator needs the CCS set to maximum demand plus a bit to spare.
If you supply <=4.7Adc @ 19.5Vdc from ~26Vdc, then the regulator will have to be capable of dissipating ~122W continuously and even more when the mains supply is high.
EB series reg only gives max aprox current 300mA & are intended for digital so Vout between 5-12V, in the EB lineamp the series reg it's integrated together the lineamp in one PCB & the All Fets reg that I use for his I/V can reach the Vout till +-40V but the output current is max +-200mA
I would tell you to look for Jung / Didden but it will need much layout PCB experience to be done right and a more current capable pre-reg than it sports. Too difficult, your are not the lab & Eagle guy. Another thing it dawned on me, is why not you just make a Sziklai capacitor multiplier the Keantoken way? It has about 25mOhm flat Zo, drops only Vbe to avoid serious heat, and will clean your original Vaio SMPS by 52dB or so.
I see no reason why you couldn't.
The question I'm asking myself is what would be the benefit, since Salas shunt regulators are quiet enough. Since the capacitance multiplier has higher ZO, the question seems to be valid.
Possibly, for lower noise, a capacitance multiplier could be hooked up before the shunt regulator, thus the best of both worlds may be achieved.
I have problems with Twisted Pear Trident reg 1.2Volts, could I use V1.2R to get Vout +1.2Volts with a Tx 9VAC so 12,69 DCin filtered & rectified?
A chip like LM317 or a specialised one (SMT mainly for CPU core voltages like Fairchild FAN1112). Don't know if its practical to RC filter and drop from a 5V one for that circuit on the other hand. You should measure the current for each position to calculate a resistor voltage drop.
A v1.0 (or v1.1 when ready) with a BJT as shunt device (MJE 340 + base stopper = 10 ohms) should work, shouldn't it Salas?
The problem is to replace the tiny smt Trident pcb with a much bigger one.
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