Adjusting the fixed (3 terminal) voltage regulators

extends:: Adjusting the adjustable voltage regulator , Apr 5, 2015

(Std./)Simple v. :

with LT1086 (1.24V - adjustable) it gives seemingly errorless output ?

Op. Amp. v. :

it looks it is impossible to gain the ±2µV error level with just the one op-amp ►►
(the reference must be flawless as it shows on the graph. ???)
The Red LED-s are so cool for voltage adjustment -- their non-linear range begins below 275µA , they have sharper "turn on" than conventional detergents -- which puts them to (Diode,Stabistor,Red-LED,Zener Diode) this position - i assume . . .

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Update :: 2016-03-11 ► Insane :

 

seemingly "absolute" voltage reference at 1 Hz

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[Eop]

alternate for gas discharge indicator

((fuck this blogger *editor is slow 2day . . . ))

so about :: i've made (now a total) 3 circuits that use active pre-load - all have failed due a different reasons

(i) using ~250V electrolytic capacitors in series with incandescent lamps -- the ´lytes exploded !!! (trivia) -- however it took them 1.5d (some 36h) to heat up -- later i just added more incandescents to fill the voltage gap

(ii) using ceramic capacitor before Russian Lim.?700V full-bridge . . . that actually has a std. leak - e.g. if [+][–] terminals are not connected the –[L]] –– [[~] Bridge [~]] –– [[]Load[]]––2 [[N] – connection provides enough AC for 25W incandescent as a Load to glow near it´s max brightness !!! --- everything worked correctly at nominal !!average!! values (measured by analog multimeter) but the LED and 1BJT failed after 1.5y (apx.13000h) ???

(iii) using 15nF as "200kΩ" pre-load to 60V neon lamp caused the neon´ to relatively fast dim down and collect eighter C or metal film to it´s inner surface causing more dimming (service apx.1500 + ? h)  . . .

. . . so i replaced it with this ::

( it´d make sense to set at least 1 fuse close to [L] or (2-nd near [N]) terminal -- this circuit relies on 10A line protection -- i can't predict how warm the (250mW) 100 ohm limit´ll get in continuous op. and what results if it does heat up . . . )         Update/About -- (so far it does not give out any smoke) but one LED is brighter the other one -- is either the asymmetry of DB3 , a bad selection of capacitor values/ratios -- or a combination of both (some of it can be adjusted by discharge resistors , charge storage cap.-s) . . .

((the Blogger* didn´t crash so far !!! . . .))

[EoF]

a Collector load (sc proof) Vtg. Regulator

since the component countfor this bullsh¡t

is higher and it has an error to the range
 of the following (! not built / tested -- but i guess it's not far from it´s actual)

then i guess i gonna get this 1 PCB-d and cased in with an appropriate ( 300+mA @ 10V DC ) transformer , damn it takes long to test out what you actually need and that actually works as designed -- should've brought a random 600÷1000mA 9V SC proof linear reg. such as KA7809

Update !

now more precise v. of the above is available

[EoP]

custom 1.2V logic "ser.-s" revised

what was revised ::

(( not too very good as seen from time.now() ))

what we got ::

(( an inverter + additional schmitt 3-ger ))

(( always fun to test new oscillators ... ))

(( basic , simple ))

(( X-Tal type ))

[EoP]