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Current Source – Circuit Schematic
Current Source
This circuit uses readily available parts to implement a 0-to-200-nA current source. The circuit borrows a PMOS ...
Bias Supply For Microwave Preamps – Circuit Schematic
Bias Supply For Microwave Preamps
These two circuits provide bias for the microwave preamps shown in this text. The circuit in Fig. 51-5(a)...
Electrolytic Capacitor Reforming Circuit – Circuit Schematic
Electrolytic Capacitor Reforming Circuit
Sometimes electrolytic capacitors that are stored for some time will exhibit high leakage currents...
Simple Ripple Suppressor – Circuit Schematic
Simple Ripple Suppressor
This circuit, at times called a capacitance multiplier, is useful for suppression of power-supply ripple. CI provi...
Efficient-supply-splitter – Circuit Schematic
Efficient-supply-splitter
In this application, the Vl-7660 is connected as a voltage splitter. Note that the normal output pin is connected to ground and the normal ground pin is used a...
Supply-voltage-splitter – Circuit Schematic
Supply-voltage-splitter
This simple circuit can convert a single supply voltage, such as a battery, into a bipolar supply. Sense resistors Rl and R2 establish relative magnitudes for ...
Fast-overvoltage-protector – Circuit Schematic
Fast-overvoltage-protector
This circuit protects expensive portable equipment against all types of improper hookups and environmental hazards that could cause an overvoltage condition. I...
Ac-circuit-breaker – Circuit Schematic
Ac-circuit-breaker
The adjustable circuit breaker responds in 0.02 sunder all conditions-provided you select a fast relay for Kl. For moderate overload conditions, it"s preferabl...
Electric-crowbars – Circuit Schematic
Electric-crowbars
To avoid grief when using 12-V power supplies with mobile transceivers, especially when there is a short -circuit failure of the series pass transistor, crowba...
Single-supply-fault-monitor – Circuit Schematic
Single-supply-fault-monitor
This circuit shows a typical over/under-voltage fault monitor for a single supply. The upper trip points, controlling OUT 1, are centered on 5.5 V with 100 mY ...
Power-supply-balance-indicator – Circuit Schematic
Power-supply-balance-indicator
This circuit uses two comparator pairs from an LM339N quad comparator; one pair drives the yellow positive (+)and negative (-)indicators, the other jointly dri...
3-30V-universal-power-supply-module – Circuit Schematic
3-30V-universal-power-supply-module
Ul, an LM317 adjustable regulator provides short-circuit protection and automatic current limiting at 1.5 A. The input voltage to the regulator is supplied by ...
100Khz-multiple-output-switching-power-supply – Circuit Schematic
100Khz-multiple-output-switching-power-supply
The power supply uses two VN4000A 400-V MOSPOWER FETs in a half-bridge power switch configuration. Outputs available are + 5 Vat 20 A and ±15 V (or ±12 V...
Remotely-adjustable-solid-state-high-voltage-supply – Circuit Schematic
Remotely-adjustable-solid-state-high-voltage-supply
The output voltage changes approximately linearly up to 20 KV as the input voltage is varied from 0 to 5 V. The oscillator is tuned by a 5-0 potentiometer to p...
Capacitor-discharge-high-voltage-generator – Circuit Schematic
Capacitor-discharge-high-voltage-generator
Stepdown transformer T1 drops the incoming line voltage to approximately 48 Vac which is rectified by diode D1; the resultant de charges capacitor C1-through...
Simple-high-voltage-supply – Circuit Schematic
Simple-high-voltage-supply
This circuit can generate high-voltage pulses with an inexpensive auto ignition coil. Add a rectifier on the output and the circuit produces high-voltage de. T...
High-voltage-dc-generator – Circuit Schematic
High-voltage-dc-generator
This circuit is fed from a 12-V de power supply. The input to the circuit is then amplified to provide a 10,000-Vdc output. ...
Preregulated-high-voltage-supply – Circuit Schematic
Preregulated-high-voltage-supply
One of the control circuit"s triacs selects the tap on main transformer Tl, which provides the proper, preregulated voltage to the secondary regulator. T2 and ...
Arc-jet-power-supply-and-starting-circuit – Circuit Schematic
Arc-jet-power-supply-and-starting-circuit
This .circuit for starting arc jets and controlling them in steady operation is capable of high power efficiency and can be constructed in a lightweight form. ...
Uninterruptable-supply – Circuit Schematic
Uninterruptable-supply
This circuit provides a continuous supply of regulated + 5 V, with automatic switch-over between line power and battery backup. When the line-powered input vol...