1. -- Testing out a random circuit from www
2. -- Testing loosely pre-calculated design (not fully conceptually correct)
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2. -- Testing loosely pre-calculated design (not fully conceptually correct)
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Sunday, December 30, 2018
Sunday, December 23, 2018
Comparing Different 6LF22 to +5V supplies
Circuits ::
Cross Ref. ::
Cross Ref. ::
| Param. | 100 | 110 | 120 | 122 | 124 | 128 |
| Description | Pos. collector-load linear-reg. | Pos. collector-load linear-reg. with fold-back | Pos. experimental Op-Amp regulated collector-load linear-reg. | Neg. j-Fet - emitter-load linear-reg. with fold-back | Pos. emitter-load linear-reg. with current lim. | Pos. VF-PWM buck conv. |
| Average Efficiency | 51% | 53% | 57% | 38% | 28% | 83% |
| Short-Circuit Current | 120 mA | 1.7 mA | NOT Ltd. | 2.6 mA | * 57 mA | NOT Ltd. |
| Voltage Regulation | ± 600 µV | ± 250 µV | ± 300 µV | ± 15 µV | (± 550µV) | ± 54 mV |
| Output Current : Nominal (Max.) | 80 (85) mA | 80 (145) mA | 80 (150) mA | 50 (105) mA | * 50 (54) mA | 200 (>400) mA |
Source Circuits ::
↑↑ src :: ISBN 5-440-00345-2
↑↑ src :: GE Transistor Manual 1964 ↑↑
↑↑ found from :: LED Torch Circuits ↑↑
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Thursday, December 20, 2018
about using BjT-s as capacitors --and-- diodes
bugs found -- see update below
a past experiment to verify the speed of different transistor's diode configurations ...
a past experiment to verify the speed of different transistor's diode configurations ...
! Update ::
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Monday, December 3, 2018
The КР140УД1208 (µA776) variants' Comparison
as by control current range -- i can telll -- i still don't have the Model 4 the Op Amp in question ...
anyway , here's the variations in between what i've come up with ::
↑ and this is better ↑ than nothing -- because it reveals the SR being dependent on the supply voltage and the control current . . . ← but also the Outp.Zero or Balance changes along . . . so the uA776 is a head-ake . . . -- to be set up with the floating supply --and/or-- with the wide-varying signal amplitude/-frequency range
► a small signal pulse response test -- it necessarily won't have the best performer being the best match2® dependency ...
► a small signal sine test -- reveals (as and brought below) the offset and phase/SR differences
-- the unit is -- (µ-"ns") per (µA)² -- the delay is revealed indirect from ::
dt(for 776) = dt(776.Outp , Fn.Gen.Outp) – dt(LT1013.Outp , Fn.Gen.Outp)
near the ~AC.zero --or-- the SG (Signal Ground) , e.g. -- near/@ ±0V in the circuit below
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anyway , here's the variations in between what i've come up with ::
↑ and this is better ↑ than nothing -- because it reveals the SR being dependent on the supply voltage and the control current . . . ← but also the Outp.Zero or Balance changes along . . . so the uA776 is a head-ake . . . -- to be set up with the floating supply --and/or-- with the wide-varying signal amplitude/-frequency range
► a small signal pulse response test -- it necessarily won't have the best performer being the best match2® dependency ...
► a small signal sine test -- reveals (as and brought below) the offset and phase/SR differences
-- the unit is -- (µ-"ns") per (µA)² -- the delay is revealed indirect from ::
dt(for 776) = dt(776.Outp , Fn.Gen.Outp) – dt(LT1013.Outp , Fn.Gen.Outp)
near the ~AC.zero --or-- the SG (Signal Ground) , e.g. -- near/@ ±0V in the circuit below
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