JFET VOLTMETER
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High-input-resistance-voltmeter
A resistance of 1,000,000 MΩ takes advantage of the high input impedance of the CA3420 BiMOS op-amp. Only two 1.5-V AA-type penlite batteries are required for use. Full-scale deflection is ±500 nV, ±150 mV, and ±15 mV.
The circuit utilizes a...
Digital voltmeter using ICL7107
The circuit presented is a highly effective and precise digital voltmeter with an LED display utilizing the ICL7107 from Intersil. The ICL7107 is a high-performance, low-power, 3.5-digit analog-to-digital converter (ADC). This integrated circuit (IC) incorporates internal components such as seven-segment...
SINGLE CHIP DIGITAL VOLTMETER
This 4.5-digit digital voltmeter (DVM) circuit is designed around the Maxim ICL7129ACPL analog-to-digital converter (A/D converter) and an LCD driver. It utilizes an ICL8069 CCZR 1.2-V band-gap reference diode for voltage referencing. The switch S2a-b-c allows the selection of one...
Very simple voltmeter with ic741
This circuit is capable of measuring voltages up to 15 volts, utilizing a 9-volt battery that draws a current of only 23 mA. The input circuit includes a diode for protection.
The circuit design features a voltage measurement system that is...
4-Channel Commutator
To achieve a low channel ON resistance of less than 30 Ohms and minimal OFF current leakage, a 4-channel commutator utilizes the 2N4091 transistor. The DM7800 voltage translator is a monolithic device that provides a gate drive of 10V to...
digital voltmeter circuit diagram
The WPG DM8168 DaVinci high-definition video System on Chip (SoC) offers multiple DVR/NVR surveillance solutions, utilizing the MT9M033 image sensor as a key component in safety monitoring systems. This solution is complemented by Conexant's line of multi-channel video surveillance applications,...
JFET-Bipolar Cascode Circuit
A JFET-bipolar cascode circuit is designed to deliver complete video output for driving the cathode of a CRT. The configuration offers an approximate gain of 90. The cascode arrangement mitigates issues related to the Miller capacitance of the JFET 2N4091,...
Analog circuit enforces slow servo response
The all-analog circuit presented controls the rate at which a miniature turbojet engine can be throttled. Increasing or decreasing the throttle too quickly on a miniature turbojet engine, or any jet engine, can lead to quick failure in flight, causing...
multi channel audio mixer using jfet
The 2N3819 is an n-channel JFET specifically designed for RF and mixer applications, offering very low noise, minimal distortion, and excellent high-frequency gain. Creating a PCB can be accomplished in a few straightforward steps. Begin by using PCB design software...