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Thermostat for 1KW Space Heater SCR controlled - Here is a simple
thermostat circuit that can be used to control a relay and supply power to a
small space heater through the relay contacts. The relay contacts should be
rated above the current requirements for the heater. Temperature changes are
detected by a(added 6/06) |
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Three Phase Bridge Rectifier - Find out about three phase bridge
rectifiers…. [REUK - Renewable Energy UK website] |
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Transformerless Mains Power Supply - This power supply does not
really excel in power efficiency, but it is the cheapest and most compact
solution for a small power supply. Note that the low voltage output is
directly... |
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Transformerless Power Supply (Aaron Cake) - I have received a few
emails asking for a transformerless power supply. Here is such a supply.
This supply uses no heavy step down transformer and has an extremely low
parts count. The circuit can be built very small and can supply....
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Transformerless Power Supply (jose pino) - Simple, low cost and
easy to build power supply. Ideal for applications that doesn't requiere too
much power. (5/28/2006) |
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Transformerless Power Supply (Len Galasso) - This power supply uses the
reactance of a non-polarized capacitor at 60hz to step-down the voltage from the
normal 117VAC level to about 20 volts or so, which is rectified by the diode….(Circuit
design added 7/06) |
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Transformerless Power Supply (Ron J) - This circuit will supply up to about
20ma at 12 volts. It uses capacitive reactance instead of resistance, so it doesn't
generate very much heat. The circuit was desigusing an optically-isolated
triac....(added 6/03) |
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Transient Protection of Darlington gain block Amplifiers - AN-60-034
Application Note MiniCircuits.com (app note added 08/08/08) |
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True RMS Detector - National Semiconductor Application Notes,28-Jun-1996 /
(app note added 6/02) |
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Two op amps provide averaged absolute value - 30-Oct-03 Issue of EDN
The circuit in Figure 1 is useful when you need amplitude demodulation or an averaged
absolute-value conversion. The circuit comprises two stages, the first of which, IC1A,
is a differential-output absolute-value converter. The second stage, IC1B, is a
traditional differential amplifier. The combination of the two stages performs
single-ended absolute-value conversion but only if R3>>R2.... [Design Idea by Dobromir
Dobrev, Jet Electronics, Sofia, Bulgaria] |
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Ultra Low Drop Linear Regulator - MOSFET based linear voltage regulator with
a voltage drop of as low as 60 mV at 1 ampere. Drop of a fewer millivolts is possible
with better MOSFETs having lower RDS(on) resistance. The circuit in Fig. 1 uses
15V-0-15V secondary from a step-down transformer and employs an n-channel....
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Ultra-Linear 32W Amplifiers 500-1000MHz LZY-2 - AN-60-005 Application
Note MiniCircuits.com (app note added 08/08/08) |
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Ultra-Linear 50W Amplifiers 20-512MHz LZY-1 - AN-60-004 Application
Note MiniCircuits.com (app note added 08/08/08) |
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Unregulated Power Supply - A basic full wave rectified power supply is shown
below. The transformer is chosen according to the desired load. For example, if the
load requires 12V at 1amp current, then a 12V, 1 amp rated transformer would do.
However, when designing power supplies or most electronic circuits,.... |
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Uses & Advantages of MERA Dual Matched MMIC Amplifiers - Application Note
MiniCircuits.com (app note added 08/08/08) |
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Using the Catalog Specifications to Determine MMIC Reliability - AN-60-030
Application Note MiniCircuits.com (app note added 08/08/08) |
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Very Low Dropout VLDO Linear Regulators Supply Low Voltage Outputs - DN292
Design Notes (Linear Technology) (app note added 1/06) |
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