IC VREG 3 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT, BCY3, TO-92, 3 PIN, Fixed Positive Single Output LDO Regulator
IC QUAD COMPARATOR, 15000 uV OFFSET-MAX, 1300 ns RESPONSE TIME, PDSO14, SOIC-14, Comparator
Adjustable Negative LDO Regulator, 3-24V, 1A, 0.6V Dropout, TO-263

Frequency-to-voltage converter for ground or supply referred load up to 50-mA (with Zener regulat 14-PDIP -40 to 85