Datenblatt-Suchmaschine für elektronische Bauteile |
|
LM12CL Datenblatt(PDF) 9 Page - National Semiconductor (TI) |
|
|
LM12CL Datenblatt(HTML) 9 Page - National Semiconductor (TI) |
9 / 14 page Application Information (Continued) OPERATIONAL POWER SUPPLY External current limit can be provided for a power op amp as shown above. The positive and negative current limits can be set precisely and independently. Fast response is assured by D 1 and D2. Adjustment range can be set down to zero with potentiom- eters R 3 and R7. Alternately, the limit can be programmed from a voltage supplied to R2 and R6. This is the set up required for an operational power supply or voltage-programmable power source. SERVO AMPLIFIERS When making servo systems with a power op amp, there is a temptation to use it for frequency shaping to stabilize the servo loop. Sometimes this works; other times there are bet- ter ways; and occasionally it just doesn’t fly. Usually it’s a matter of how quickly and to what accuracy the servo must stabilize. This motor/tachometer servo gives an output speed propor- tional to input voltage. A low-level op amp is used for fre- quency shaping while the power op amp provides current drive to the motor. Current drive eliminates loop phase shift due to motor inductance and makes high-performance ser- vos easier to stabilize. This position servo uses an op amp to develop the rate sig- nal electrically instead of using a tachometer. In high-performance servos, rate signals must be developed with large error signals well beyond saturation of the motor drive. Using a separate op amp with a feedback clamp al- lows the rate signal to be developed properly with position errors more than an order of magnitude beyond the loop-saturation level as long as the photodiode sensors are positioned with this in mind. DS008704-19 Note: Supply voltages for the LM318s are ±15V DS008704-20 DS008704-21 www.national.com 9 |
Ähnliche Teilenummer - LM12CL |
|
Ähnliche Beschreibung - LM12CL |
|
|
Link URL |
Privatsphäre und Datenschutz |
ALLDATASHEETDE.COM |
War ALLDATASHEET hilfreich? [ DONATE ] |
Über Alldatasheet | Werbung | Kontakt | Privatsphäre und Datenschutz | Linktausch | Hersteller All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |