10V High-Stability Voltage Source Model


High-stability voltage source
Fig .1 Highly stable source of voltage schematic

Experimental studies of exemplary scheme of a highly stable source of voltage (Fig. 1) in the temperature range from -18 ° C to 50 ° C show that the temperature error of less than ± 0.001% / ° C, temporal drift no more than ± 0.005% per day. Source has a small thermal hysteresis (Fig. 2).


Temperature characteristic
Fig. 2 temperature characteristic of source


Parts list :

  • R1, R3 =1K
  • R2 = 15K
  • R4 = 6K8
  • R5 = 2K2
  • R6,R10 = 110 ohm
  • R7 = 11 ohm
  • R8 = 820 ohm
  • R9 = 3K3
  • C1,C2 = 10nF
  • D1 = D818E

To ensure high stability in the scheme used the method of heating the crystal heating and temperature monitoring. To study the selected type of transistor assembly 1NT251 with Formula. Transistor Q2 is used to heat the crystal, and Q4 – a temperature sensor. Zener diode D1 – D818E. The operating mode is set for not more than 1 minute.



Tags: high stability voltage source voltage source

Related Post "10V High-Stability Voltage Source Model"

Switch Mode Voltage Regulator with 85% efficiency
Switch Mode Power Supplies (SMPS) is now
Positive Regulator with PNP Boost
The IC8211 (Programmable Voltage Detectors) provides the
Variable Voltage Regulator based LM117
The regulator circuit uses an LM117K three-terminal
Variable Zener Diode
This circuit acts like a zener diode

Comments are closed.