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2016-08-09 by jaccoville@yahoo.com
Hello there, I recently bought the A-100MC case incl adapter. With a maximum of 200mA ,which is a bit lean, I think I can't use it for a few modules to my wish. Like the A190-4, A190-8 and....? Is it possible to use an other adapter with more power and if so, what is the maximum current to use for the regulator? Best regards Jacco Ville The Netherlands
2016-08-09 by Florian Anwander
Hello Jacco Am 09.08.2016 um 15:17 schrieb jaccoville@yahoo.com [Doepfer_a100]: > I recently bought the A-100MC case incl adapter. > With a maximum of 200mA ,which is a bit lean, I think I can't use it for a few modules to my wish. > Like the A190-4, A190-8 and....? > Is it possible to use an other adapter with more power and if so, what is the maximum current to use for the regulator? The regulators will do 1A, but they need appropriate heat sinks. Also the rectifier is assumingly not suitable for much higher currents; also the capacitors might be too small. Dieter will tell details assumingly. Larger heatsinks (like the ones for the A-100DIY) might be mounted flat on the rear panel; you'd have to unsolder the regulator. The rectifier and caps may have to be replaced with a larger one. Florian
2016-08-09 by yahoo@doepfer.de
> Hello Jacco > > Am 09.08.2016 um 15:17 schrieb jaccoville@yahoo.com [Doepfer_a100]: > > I recently bought the A-100MC case incl adapter. > > With a maximum of 200mA ,which is a bit lean, I think I can't > use it for a few modules to my wish. > > Like the A190-4, A190-8 and....? > > Is it possible to use an other adapter with more power and if > so, what is the maximum current to use for the regulator? > The regulators will do 1A, but they need appropriate heat sinks. Also > the rectifier is assumingly not suitable for much higher currents; also > the capacitors might be too small. Dieter will tell details assumingly. > Larger heatsinks (like the ones for the A-100DIY) might be mounted flat > on the rear panel; you'd have to unsolder the regulator. The rectifier > and caps may have to be replaced with a larger one. > > Florian It's all correct what Florian wrote: You may need larger heat sinks and if ripples appear on the supply voltages the electrolytic capacitors have to be increased. And pay attention that you need a 9V AC adapter (not DC !) Best wishes Dieter Doepfer
2016-08-09 by Jacco Ville
Hi Florian, I don't need 1000mA but more like 400mA or so. Maybe this value can be reached with just another adapter and without modification. Any advice will be welkome. Thank you for your kind reply. Jacco Verstuurd vanaf mijn iPhone SE Lunatik
> Op 9 aug. 2016 om 15:39 heeft Florian Anwander fanwander@mnet-online.de [Doepfer_a100] <Doepfer_a100@yahoogroups.com> het volgende geschreven: > > Hello Jacco > > Am 09.08.2016 um 15:17 schrieb jaccoville@yahoo.com [Doepfer_a100]: > > I recently bought the A-100MC case incl adapter. > > With a maximum of 200mA ,which is a bit lean, I think I can't use it for a few modules to my wish. > > Like the A190-4, A190-8 and....? > > Is it possible to use an other adapter with more power and if so, what is the maximum current to use for the regulator? > The regulators will do 1A, but they need appropriate heat sinks. Also > the rectifier is assumingly not suitable for much higher currents; also > the capacitors might be too small. Dieter will tell details assumingly. > Larger heatsinks (like the ones for the A-100DIY) might be mounted flat > on the rear panel; you'd have to unsolder the regulator. The rectifier > and caps may have to be replaced with a larger one. > > Florian >
2016-08-09 by Jacco Ville
Hello Dieter, I got the message, time for work ;-) Best regards Jacco Ville Verstuurd vanaf mijn iPhone SE Lunatik Op 9 aug. 2016 om 18:24 heeft yahoo@doepfer.de [Doepfer_a100] <Doepfer_a100@yahoogroups.com> het volgende geschreven:
>> Hello Jacco >> >>> Am 09.08.2016 um 15:17 schrieb jaccoville@yahoo.com [Doepfer_a100]: >>> I recently bought the A-100MC case incl adapter. >>> With a maximum of 200mA ,which is a bit lean, I think I can't >> use it for a few modules to my wish. >>> Like the A190-4, A190-8 and....? >>> Is it possible to use an other adapter with more power and if >> so, what is the maximum current to use for the regulator? >> The regulators will do 1A, but they need appropriate heat sinks. Also >> the rectifier is assumingly not suitable for much higher currents; also >> the capacitors might be too small. Dieter will tell details assumingly. >> Larger heatsinks (like the ones for the A-100DIY) might be mounted flat >> on the rear panel; you'd have to unsolder the regulator. The rectifier >> and caps may have to be replaced with a larger one. >> >> Florian > > It's all correct what Florian wrote: > > You may need larger heat sinks and if ripples appear on the supply voltages > the electrolytic capacitors have to be increased. > And pay attention that you need a 9V AC adapter (not DC !) > > Best wishes > Dieter Doepfer > > > > > > ------------------------------------ > > ------------------------------------ > > > ------------------------------------ > > Yahoo Groups Links > > >