Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1982-10-27
1984-08-07
Paschall, M. H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219504, 219506, 219483, 219484, 338 20, H05B 102
Patent
active
044645643
ABSTRACT:
A current controller interface accepts a variable voltage at its input and develops a current at its output which corresponds directly with the input variable voltage. Its apparatus is usually associated with a program controller as an input and a microscope which has a heated element as the output. The apparatus uses a control circuit which is coupled to a controllable resistance semiconductor device, which device has an output which varies in resistance in accordance with variation in input current. The output of the variable resistance device is coupled in series with the heating coil of the microscope, the power supply and current sensing resistor. The resistor develops a feedback voltage which is applied to the control circuit so that when a change in voltage is applied to the input the output from the current sensing element will change until it balances the current being applied at the input. When the balance occurs, no further change in output current will occur.
REFERENCES:
patent: 3139515 (1964-06-01), Leigh et al.
patent: 3413517 (1968-11-01), Barber et al.
patent: 3597652 (1971-08-01), Gates, Jr.
patent: 3670202 (1972-06-01), Paine et al.
patent: 3805022 (1974-04-01), Kulwicki et al.
patent: 3833282 (1974-09-01), Kappl et al.
patent: 3833283 (1974-09-01), Stankewitz
patent: 3885194 (1975-05-01), Schumacher
patent: 3900244 (1975-08-01), Wiesler et al.
patent: 3909662 (1975-09-01), Thomas et al.
patent: 3913055 (1975-10-01), Levinson
patent: 3933408 (1976-01-01), Reinert
patent: 4068281 (1978-01-01), Harnden, Jr.
patent: 4135116 (1979-01-01), Smith
patent: 4300037 (1981-11-01), Padden
patent: 4359414 (1982-11-01), Mastrangelo
Alexander Jimmy R.
Bockhorst Rhea W.
Boles Don E.
Zimmerman Wiley E.
Conoco Inc.
Miller William J.
Paschall M. H.
LandOfFree
Current controller for heating stage on leitz microscope does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Current controller for heating stage on leitz microscope, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Current controller for heating stage on leitz microscope will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-604730