LOGARITHMIC CONVERTER AND INTEGRATOR
Technical Report
·
OSTI ID:4755487
A logarithmic converter and integrator circuit, which is used in an ultraviolet flying spot microscope, measures in two seconds a complete 200-line field. Each of the 5 diodes in the circuit has a logarithmic response. The video current is supplied to the log diode from a 50 K resistor fed by a voltage source. The log signal is amplifled and then clipped below an arbitrary level to leave only the range of interest. This signai is again amplified and drives a resistor which behaves as a current generator to charge up the integrating capacitor. (M.C.G.)
- Research Organization:
- Institute for Cancer Research, Philadelphia
- NSA Number:
- NSA-17-003266
- OSTI ID:
- 4755487
- Report Number(s):
- TID-14150
- Country of Publication:
- United States
- Language:
- English
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