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+12V/-12V Power Supply Unit - To work circuit
which used operational amplifier and so on,
positive and negative power supply become
necessary. power supply which I introduce here is
one to have used unit which has two power supplies
of 12 V in one unit. Power supply unit is using
ready-made. It inputs AC100 V and it is possible to
take out 12 V of two DCs which are independent as
output. (app note added 4/05)
150 Ohm Line to 600 Ohm Load Application - AS011
Jenson Transformer Application Note. Isolation
transformer with impedance conversion
2-Way Passive Guitar Splitter - AS013 Jenson
Transformer Application Note. From one guitar to
two guitar amplifiers
4-Way Active Guitar Splitter - AS014 Jenson
Transformer Application Note. From one guitar to up
to four guitar amplifiers
50 Ohm Long Line Driver - AS029 Jenson
Transformer Application Note
50 Ohm Long Line Receiver & Driver - AS028
Jenson Transformer Application Note.
600 Ohm Line Isolation Application - AS010
Jenson Transformer Application Note. Isolation
transformer for 600 ohm balanced audio line
A Zero-Feedback SRPP-Input Headphone Amplifier -
Features a series regulated push-pull input stage
and transformer-coupled output stage with an output
impedance of about 2.5 ohms. It has zero global
feedback for open, natural sound without any
harshness. Designed by Simon Busbridge
AC Couple Analog Signals without a DC Bias Source
- EDN-Design Ideas: / A conventional ac-coupling
circuit in a single-supply system comprises a series
capacitor and a shunt resistor to ground.
Unfortunately, negative peaks of input signal can
exceed -0.3V input operating-range limits of an
ADC, such as LTC1402 serial 12-bit sampling ADC. To
avoid going below ground, circuit must return
shunt input.
Additional RFI Protection for Line Input Circuits
- AS072 Jenson Transformer Application Note
Algorithm Tests for Point Location - EDN-Design
Ideas
Algorithm Transforms Filter Coefficients - EDN-Design
Ideas To synsize infinite-impulse-response (IIR)-filter
functions, expressed as H(z), you commonly use
analog prototype-filter functions, expressed as H(s),
using bilinear-z transform. This operation entails
some algebraic complexity in calculating filter
coefficients. The simple algorithm shown here
transforms prototype-filter coefficients (W0, W1,
W2)to IIR digital-filter coefficients (U0, U1, U2).
These coefficients transform from s (analog)domain
to z (digital) domain.
Alway On Signal Sensing Subwoofer Mute Circuit -
AS101 Jenson Transformer Application Note
An Acoustic Transformer Powered Super-High Isolation
Amplifier - National Semiconductor Application
Note
AN134 AES & SPDIF Recommended Transformers
AN-285: An Acoustic Transformer Powered Super-High
Isolation Amplifier - National Semiconductor
Application Note
Anti-RIAA Equalizer for Line to Mag Phono Converter
- AS071 Jenson Transformer Application Note
Balanced Line Inputs/Outputs for Silicon Graphics
workstations - AS075 Jenson Transformer
Application Note
Balanced Line Level to Unbalanced Guitar Level -
AS092 Jenson Transformer Application Note
Balanced Tube Line Input Stage - AS088 Jenson
Transformer Application Note
Balanced XLR Input to Unbalanced RCA Output -
AS089 Jenson Transformer Application Note
Balun Transformers - Application Note
MiniCircuits.com
Basic Hum Stopper Transformer Isolation Box -
AS036 Jenson Transformer Application Note. Simple
isolator for 600 ohm balanced audio lines
Bi-directional Lo-Z Long Line Application -
AS077 Jenson Transformer Application Note
Build the Hummer to Find Pin 1 Problems in Equipment
- AS032 Jenson Transformer Application Note
Cascode Tube Microphone Input Stage - AS054
Jenson Transformer Application Note
Connect Line-Level Signal to Phono Input
- The
circuit does two functions: signal level attenuation
and inverse RIAA filtering. The signal attenuation
is needed to convert the 500 mV signal to 2.5 mV
signal. The inverse-RIAA filtering is needed to make
the frequency response of the system flat (same
equalization that is used when music is transferred
to vinyl in the studio). The picture blow shows the
frequency response of the ideal inverse-RIAA filter
Conversion of Unbalanced Input to Balanced -
AS002 Jenson Transformer Application Note
Converts 600 Ohm Unbalanced Mic to 150 Ohm Balanced
Mic Line - AS049 Jenson Transformer Application
Note
Converts Consumer Stereo Inputs to Mono Balanced Mic
Output - AS078 Jenson Transformer Application
Note
Converts High Impedance Input to X10 Balanced Audio
Input - AS090 Jenson Transformer Application
Note
Converts Unbalanced Output to Balanced - AS052
Jenson Transformer Application Note
Differential Line Driver with Feedback Around the
Transformer - AS051 Jenson Transformer
Application Note
Direct Box for Very High Level Signals - AS008
Jenson Transformer Application Note
Dual JT-MB-C Microphone Combining Circuit -
AS053 Jenson Transformer Application Note
Everything You Wanted to Know About Wideband Low
Frequency Transformers - EDN-Design Ideas
External Isolation Transformer Box for Mackie -
AS073 Jenson Transformer Application Note
Famous Twin-Servo 990 Mic Preamp Basic Circuit -
AS083 Jenson Transformer Application Note
Floating Supply for LCD Panel Meter - includes
several designs, scroll down to find this one
Flyback circuit provides isolated power Conversion
- EDN-Design Ideas: A common requirement in
telecommunications systems is to convert an
unregulated 48V line to an isolated, accurate dc
supply voltage. The circuit in Figure 1 provides a
5V, 15W output. The circuit uses a UCC3809
primary-side controller, which can also control
other single-ended converters. The topology uses
peak-current-mode control with a fixed-frequency
oscillator. The design is cost-efficient
Full-featured Direct Box Application Schematic -
AS066 Jenson Transformer Application Note
Generic Tube Line Input Stage - AS087 Jenson
Transformer Application Note
Grounding & Shielding - describes basic audio
transformer uses like balanced in/out and signal
splitters
Guitar to Amp Long Line Circuit - AS097 Jenson
Transformer Application Note
Ham Radio Line Level to Mic Level Circuit -
AS096 Jenson Transformer Application Note
High CMRR Balanced Interface for Crystal 18 or 20
Bit A/D Converters - AS062 Jenson Transformer
Application Note
High Level High Current Differential Output Stage
with DC Servo - AS031 Jenson Transformer
Application Note
High Level Low Impedance Differential Output Stage
with DC Servo - AS034 Jenson Transformer
Application Note
High Output Line Driver for Single Ended Power
Supply - AS079 Jenson Transformer Application
Note
High Performance Audio Op-Amp Quick Reference -
AS050 Jenson Transformer Application Note
How RF transformers work & how they are measured
- Application Note MiniCircuits.com
IC Mic Preamp uses Jensen Twin-Servo Circuit
Topology - AS082 Jenson Transformer Application
Note
Improves CMRR of Electronically Balanced Line Inputs
- AS069 Jenson Transformer Application Note
Improves Performance of SSM2015 Mic Preamp IC -
AS063 Jenson Transformer Application Note
Improves Performance of SSM2017 Mic Preamp IC -
AS064 Jenson Transformer Application Note
Input Stage for Crystal A to D Converters -
AS043 Jenson Transformer Application Note
Input Transformer for Crystal CS5367 A/D Converter
- AS086 Jenson Transformer Application Note.
Transformer balanced passive input circuit for
CS5367 A/D converter
Interconnection of Balanced & Unbalanced Equipment
- 4 page booklet in PDF format
Internal Modification to Mic Inputs of the Mackie
1604 Mixer Eliminates RFI Problems - AS074
Jenson Transformer Application Note
Introduction, definition of terms, Q&As-tran14-2
- Application Note MiniCircuits.com
Isolated AC Current Monitor - This circuit uses
a small AC current transformer from Magnetek to
produce an isolated voltage proportional to the AC
current in the primary winding. The transformer
contains a single turn primary with a low 0.001-ohm
resistance. It can easily handle 30 amps of AC
current and provides at least 500vac of isolation.
With the components shown, the output AC voltage is
scaled so 1 amp of current produces 100mv of AC
voltage.
Isolated Line Output from Guitar Amplifier -
AS045 Jenson Transformer Application Note
Isolates & Converts Guitar Amp Speaker Out to Line
Output - AS061 Jenson Transformer Application
Note
Isolates & Converts Speaker Drive to Line Level
- AS068 Jenson Transformer Application Note
Isolates 70 Volt Line & Converts to Line Level -
AS059 Jenson Transformer Application Note
Isolates both Mic & Line Inputs of Inexpensive Mixer
- AS015 Jenson Transformer Application Note
Isolates Phantom Powered Guitar or Instrument Buffer
- AS004 Jenson Transformer Application Note
Isolation Transformer Passes Millihertz Signals
- 08/04/94 EDN-Design Ideas: You can successfully
use an ordinary low-cost line transformer as an
isolation transformer in ac circuits that require
floating sources. However, at frequencies below 20
to 30 Hz, high distortion and excessive phase
shifting occur.
Isolator Transformer for Audio Lines - If you
want to do the ground loop elimination in audio
path, you have to cut the galvanic connection but
pass the whole audio range. The simplest and most
common way to do the isolation is use audio
transformer which is ment for audio use.
Transformers for audio use have some problems like |
